1966 Marshall JTM-45 Mk II in for Repairs......A Rare and Wonderful Gem !!

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  • čas přidán 27. 05. 2021
  • This video documents the repair of a splendid 1966 Marshall JTM-45 MkII amp sent to us for repairs. The initial problems cited were a "gap" in one of the volume controls and a tendency to "red-plate".....but, as you will see, other issues arose. Also, due to the "special nature" of this wonderful old amp, we sought to make component substitutions as unobtrusive as possible.
    In addition, we open some gifts from a very generous viewer.....with Jack and KC's help, of course.....and feature a second video showing one method to repair a "scary" problem in a BF Super Reverb.
    Thanks to all our Patreon patrons and PayPal contributors for your continued support, and to all of you who helped us reach the lofty goal of 100,000 Subscribers !!! Way back when we posted our first video on YT, we never dreamed things would turn out this way......and they would not have, without our wonderful viewers. Thanks for making this such a rewarding experience.
    If you would like to support our channel, please consider becoming a Patreon patron at / uncledougsvintageamps or making a PayPal contribution to dldcam@aol.com. Regardless, we really appreciate your time and interest in our channel.
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Komentáře • 1,4K

  • @GiuBernardi
    @GiuBernardi Před 3 lety +280

    Who needs Netflix when we've got 76 minutes of Uncle Doug ?

    • @UncleDoug
      @UncleDoug  Před 3 lety +15

      Thanks so much, Giuseppe :)

    • @Ron_Padgett
      @Ron_Padgett Před 3 lety +5

      Exactly!

    • @Darylvb
      @Darylvb Před 3 lety +5

      Agreed!!

    • @mikeroadblock
      @mikeroadblock Před 3 lety +2

      Bravo.

    • @mitchmorris4998
      @mitchmorris4998 Před 3 lety +8

      I know! My wife couldn't wrap her head around why i enjoy these so much, then she started loving to listen to him and she is not even a musician! I also steal many of his "Uncleisms"! One of my faves: we have wires hanging like a dis-embowled Antelope!😄

  • @SevenPillarOfFolly
    @SevenPillarOfFolly Před 3 lety +122

    Hooray! an hour of amp fixing and dry humour!

  • @Charlie-Oooooo
    @Charlie-Oooooo Před 3 lety +55

    "Well, greetings out there in CZcams land...." - when I hear this I know we are in for a treat! Thanks for the amp tech videos Uncle Doug!!!

    • @UncleDoug
      @UncleDoug  Před 3 lety +3

      Thanks !! I hope you enjoyed it, Charles.

    • @thesillyhatday
      @thesillyhatday Před 3 lety +2

      Doug can give us British a lesson on dry humour :)

    • @PandemoniumMeltDown
      @PandemoniumMeltDown Před 3 lety +1

      My Temptations starts now, I purr.

    • @Charlie-Oooooo
      @Charlie-Oooooo Před 3 lety +1

      @@PandemoniumMeltDown maybe Jack or Casey will share their treats with you :) 🐱😺 meow

  • @cloydsprenkle5170
    @cloydsprenkle5170 Před 3 lety +45

    You generate a whole new respect for quality work on quality equipment. You go the extra mile.

  • @tonymelendez9295
    @tonymelendez9295 Před 2 lety +16

    Uncle Doug is my favorite amp repair guy. His knowledge is very good and his attitude is the best. It is no wonder that people send him so many gifts. He is a wonderful human being. The world could use several billion people of his demeanor. The work displayed in this clip is highly commendable. Pretty much the norm for Uncle Doug.

    • @UncleDoug
      @UncleDoug  Před 2 lety +2

      Wow....thanks so much for all the very complimentary comments, Tony :)

    • @Headwind-1
      @Headwind-1 Před rokem

      agree . . .

    • @iceWaterProductions1
      @iceWaterProductions1 Před rokem

      @@UncleDoug will leave the most revered comments.

    • @UncleDoug
      @UncleDoug  Před rokem

      @@iceWaterProductions1 Thanks :)

  • @UncleDoug
    @UncleDoug  Před 3 lety +64

    A few comments on the video: 1.) I say "6V6" instead of "6L6" at 1:11:20. 2.) Thanks to Robert Set for the opening musical montage and logo. 3.) We tried jumpering Ch. 1 & Ch.2 for the audio demo, but for some reason it did not record well. 4.) It should be noted that Jim Marshall himself did not actually build the amps.....this task was done by Dudley Craven and Ken Bran.

    • @rillloudmother
      @rillloudmother Před 3 lety +5

      Definitely feeling the opening montage.

    • @scottdunn2178
      @scottdunn2178 Před 3 lety +2

      Although Jim would frequently be covering cabinets in the early days and his signature can be found inside...

    • @guitarisdead1642
      @guitarisdead1642 Před 3 lety

      Who has a better story than Bran? jk

  • @andrefranco6814
    @andrefranco6814 Před 3 lety +26

    Uncle Doug getting a new video out means to stop anything, grab some tea or coffe and getting into yet another great repairing session with great humor :) I will need to get one of these Marshalls, some day...

    • @UncleDoug
      @UncleDoug  Před 3 lety +6

      Thanks so much, Andre. I hope you enjoy it :) We all need a JTM of our own :)

    • @TucsonBillD
      @TucsonBillD Před 3 lety +2

      Check out the new Marshall Studio amps... while they are PCB instead of hand wired, their build quality is outstanding. Fact is, Marshall could teach Fender (and others) a thing or two about amp design.

    • @unboxedtravels
      @unboxedtravels Před 3 lety +4

      Stop anything and grab some tea to watch ? André, do you have a spycam in my living room that I'm not aware of ? 🤔 I was supposed to start working, but got « distracted » by Doug's entertaining offering 😂

  • @stevenmoffitt1643
    @stevenmoffitt1643 Před 2 měsíci

    Hi, I really enjoy your videos for many years. I wish I lived in Texas to talk you into letting me apprentice with you. I could learn more than I do from your videos alone. Thank you for your teachings. I've learned so much from you.

    • @UncleDoug
      @UncleDoug  Před 2 měsíci

      That's great to hear, Steven. We're really glad the videos are helpful and informative.

  • @leonardpeters3266
    @leonardpeters3266 Před 2 lety +3

    Wow that tip on stopping the high frequency oscillation was absolutely fantastic. I really appreciate that. Thank you so much, I will store that in the old memory banks. Great stuff.

    • @UncleDoug
      @UncleDoug  Před 2 lety +1

      Thanks, Leonard. Glad you enjoyed the video.

  • @KKMcK1
    @KKMcK1 Před 3 lety +3

    I'm just a guitar player. No electrical knowledge before finding your series of videos. I am always fascinated watching you work and explain all of the dark voodoo magic of electronics. Your attention to detail (respectful reverence?) towards this 66 JTM45 was awe-inspiring! I hit the thumbs up while wishing there was a guy standing on his chair applauding wildly I could trigger to let you know how much I appreciate your desire to always go above and beyond! Cherry custom shop work!

    • @UncleDoug
      @UncleDoug  Před 3 lety +2

      Wow....thanks so much for all the very nice comments, Kieron. We really appreciate hearing from you.

  • @BrunoWiebelt
    @BrunoWiebelt Před 3 lety +1

    sounds silk smooth ... you are a magician

  • @youscreamiscream
    @youscreamiscream Před 2 lety

    This my old amp! Of the hundreds of Marshall's I've owned, this was the BEST Marshall I ever owned! Should have never sold it...lol. Happy to see it's pretty much in the same condition as when it left me!

    • @UncleDoug
      @UncleDoug  Před 2 lety

      Wow.....it's a small world. Thanks for the input :)

  • @fullwaverecked
    @fullwaverecked Před 3 lety +6

    I never try the dangerous stuff at home. I used to do it at the neighbor's, until the fire... Anyway, great video! Thanks UD!

    • @UncleDoug
      @UncleDoug  Před 3 lety +3

      Safety begins at home, FWR......to heck with the neighbors ;) Glad you enjoyed it.

  • @fostexfan160
    @fostexfan160 Před 2 lety +4

    Superb video Uncle Doug. Some very innovative cosmetic enhancements with the capacitors that preserve the visual integrity of the amp. So much so that I consider the film to be worthy of mention and inclusion into the Smithsonian archives. We took these amps for granted many years ago here in the UK, so nice to see yourself and others appreciating and maintaining what you rightly describe as 'Jewels'

  • @jerryhatrick5860
    @jerryhatrick5860 Před rokem

    I have never in my life heard a Marshal clean channel sound so nice over yout tube , holy cow batman

    • @UncleDoug
      @UncleDoug  Před rokem

      Thanks so much, Jerry. High praise indeed :)

  • @murphyr31
    @murphyr31 Před 2 lety

    No substitute for accumulation of knowledge … well done sir!

  • @robinosborne266
    @robinosborne266 Před 3 lety +12

    Congratulations Doug on achieving your 100,000 subscribers -you thoroughly deserve it. The knowledge and the humour with which you pass on that knowledge makes every video a treat. Thank you for all of the effort that you put into each video. Thought that you might like to know that our new puppy - Penny is totally settled in and is proving to be a fantastic little character. She has brought a smile back to our faces after all of the health issues that I have and continue to have. Take care and it’s great to see you and your animal family back.

    • @UncleDoug
      @UncleDoug  Před 3 lety +2

      Thanks so much for all your kind words, Robin. All our love to Penny and best wishes for better health.

  • @Skman22
    @Skman22 Před 3 lety +9

    I can't tell you how much I appreciate your tuition, passion, love, care and respect for the craft. You truly are an inspiration and my favourite educator in this field by far. The efforts you go to to bring us these videos and the knowledge passed on during them are truly appreciated. Thank you, really. Best, Scott.

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Wow, Scott, what a wonderful series of comments. We truly appreciate your kind words.

  • @davidjames5644
    @davidjames5644 Před 3 lety

    I was lucky enough to own a '64 or '65 variant of this amp between 1969 and 1974 here in the UK. It had the Marshall name in a solid Perspex plate, and the knobs were the larger variety with brushed aluminium faces. Other than that, the amp here seems pretty much identical, with the weighty transformers and the KT 66s. I loved that amp, but it had a chequered history. I once loaned it to a pal, who forgot to connect the speaker cab and promptly burned out the output transformer. Then I had it stolen - twice! The first time it was recovered thanks to a diligent police detective and a pretty stupid thief. The second time, it was lifted from the band's van, and that was the last I saw of it. So thanks for the memories, Uncle Doug! Always love it when a new video appears.

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Sorry to hear of your loss, David, but thanks for sharing your experiences with us :)

  • @hgostos
    @hgostos Před 3 lety +2

    Those original GEC KT66s are nearly indestructible... great video.

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Thanks, Hilario :)

    • @vayabroder729
      @vayabroder729 Před 3 lety

      Genalex

    • @hgostos
      @hgostos Před 3 lety +2

      @@vayabroder729 Both are the same. General Electric Company, Ltd., Magnet
      House, Kingsway, London W.C.2,
      England

    • @AlainGuindon
      @AlainGuindon Před 2 lety

      Osram Marconi

  • @enidsnarb
    @enidsnarb Před 3 lety +3

    Such a wonderful attack / decay and shimmer on this amp! Yes indeed , a hit maker in the studio !

    • @karst41
      @karst41 Před 3 lety +2

      Who else exploits the incredible clean Marshall settings.

    • @enidsnarb
      @enidsnarb Před 3 lety +3

      @@karst41 Hendrix for one

    • @UncleDoug
      @UncleDoug  Před 3 lety +2

      I agree, Enid. One of my guitarist friends commented on the "chord bloom and chime".......it's a very special amp :)

  • @gregbrown9882
    @gregbrown9882 Před 3 lety +9

    Love the new intro.

    • @UncleDoug
      @UncleDoug  Před 3 lety +3

      Created by a very kind viewer, from Poland, I believe :)

  • @shade057
    @shade057 Před 4 měsíci

    Thanks uncle Doug for the 2nd part of the video. The current limiter can really save tonnes of money as well.
    And in the first video, the sound of the JTM with P-90s is a killer. Wow! 💪🏻

    • @UncleDoug
      @UncleDoug  Před 4 měsíci

      Glad you enjoyed the video, Shade.

  • @loopinnerthe
    @loopinnerthe Před 2 lety

    This Watches so easily it is dePendant on our so knowledgeable host..We appreciated seeing your Jewels and hearing your Pearls of wisdom. We also saw a beautiful Chain of two amps in this video and they were Ringing so delicately by the end. Uncle Doug you are a Diamond.

    • @UncleDoug
      @UncleDoug  Před 2 lety

      Wow....thanks for all the gem comparisons, IL :)

  • @dhpbear2
    @dhpbear2 Před 3 lety +8

    Congrats on that new intro, Uncle Doug!

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Thanks, David. It was created by a viewer from Poland.

  • @bobboitt3126
    @bobboitt3126 Před 3 lety +5

    Super professional repair! What a Classic old amp. A dream amp in pristine condition. Thanks Uncle Doug 👍

    • @UncleDoug
      @UncleDoug  Před 3 lety +2

      You're welcome, Bob. So glad you liked it.

  • @rickycompton2610
    @rickycompton2610 Před 2 lety +2

    Man Uncle Doug your attention to Detail and keeping this amp looking original is awesome I can’t believe I missed this video .

    • @UncleDoug
      @UncleDoug  Před 2 lety +1

      Thanks, Ricky. Glad you enjoyed it.

  • @peterhaig3450
    @peterhaig3450 Před 3 lety

    I never miss an Uncle Doug video.

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Were honored to hear it, Peter :)

  • @jeffcotton526
    @jeffcotton526 Před 3 lety +12

    Congrats on reaching 100K subscribers! You're the best repair person on CZcams!

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Thank you so much, Jeff 😀

    • @cass2771
      @cass2771 Před 3 lety +1

      100k IS quite a milestone. Well done - it is an acknowledgement of the quality of your channel!

  • @geraldmcquaid5383
    @geraldmcquaid5383 Před 3 lety +4

    Uncle Doug, love the channel, your attention to aesthetics and electrical precision makes it “must-see TV”! Congratulations on reaching 100K subscribers! Next goal is 250K. We’re all pulling for you!!!

    • @UncleDoug
      @UncleDoug  Před 3 lety +2

      Wow....thanks so much, Gerald :)

  • @harmonsalmon7739
    @harmonsalmon7739 Před rokem

    Uncle that sounds fantastic brother, you're a genius.

  • @udr3005
    @udr3005 Před 3 lety +1

    Uncle, you are a genious.

    • @UncleDoug
      @UncleDoug  Před 3 lety

      You are too kind, Ulrich.....but thanks ;)

  • @matthewzimmerer3329
    @matthewzimmerer3329 Před 3 lety +5

    Thanks so much for everything you do, Doug. I have learned a ton. Love the snazzy intro, too. You're the coolest Uncle I never had!

    • @UncleDoug
      @UncleDoug  Před 3 lety +2

      Wow....thanks so much, Matthew :)

  • @zankyalbo2208
    @zankyalbo2208 Před 3 lety +19

    Here's a saying that I heard all the time about these amps.
    "It's only 45 watts, like a Bassman .... but those are British watts !" LOL

    • @UncleDoug
      @UncleDoug  Před 3 lety +4

      After being blasted by one of these jewels, I concede the wisdom of that statement, Zanky :)

    • @goodun2974
      @goodun2974 Před 3 lety +2

      @@UncleDoug , are those "keep calm and carry on" watts, "stiff upper lip" watts, or "get on with it!" watts? 😁🤔

    • @highpath4776
      @highpath4776 Před 3 lety +1

      @@goodun2974 Seagoon Watts.

    • @highpath4776
      @highpath4776 Před 3 lety +2

      RMS rather than peak measurement ?

    • @goodun2974
      @goodun2974 Před 3 lety

      @@highpath4776 "Seagoon"? Some British phrase which, as an American, I am not familiar with?

  • @JerryEricsson
    @JerryEricsson Před 3 lety +2

    To be honest with you, I have never opened up an amplifier, however I love electronics and watch as many videos about different aspects of the subject as I can. I do love your videos because of the way you go into what is happening in a circuit and how each component can have such a drastic effect on the overall operation of the unit. Thanks a million for being one of my instructors, it's like being back in college once more, except instead of law, I am learning electronics!

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Thanks so much, Jerry. We're glad the videos are informative :)

  • @raxxtango
    @raxxtango Před 2 lety

    UD IS THE BEST ENTERTAINMENT AND TECH INSTRUCTION IN THE WORLD

    • @UncleDoug
      @UncleDoug  Před 2 lety

      Wow......thanks so much, Rax :)

  • @WillyMcCoy50
    @WillyMcCoy50 Před 3 lety +10

    Congratulations on 100k! The Marshall sounds great with all the pickup varieties and your work looks fantastic!

    • @UncleDoug
      @UncleDoug  Před 3 lety +3

      Wow....thanks so much KM :)

    • @greg4673
      @greg4673 Před 2 lety

      I can't tell anything unless it's dimed

  • @RhythemNBlues
    @RhythemNBlues Před 3 lety +6

    Why am I strangely drawn to watch these videos 3 and 4 times.....what's wrong with me!!!

    • @UncleDoug
      @UncleDoug  Před 3 lety +7

      Sounds like a case of good taste to me, R&B ;)

    • @nevillegoddard4966
      @nevillegoddard4966 Před rokem +1

      Look I dunno what the hells wrong with you rnb, but stop spreading it round will you ok? It could could be the next pandemic.

  • @SeanWeaver
    @SeanWeaver Před 10 měsíci

    "When I grow up I want to be a guitar player. I want to be able to have enough money so I could buy a huge amp named a Marshall Full Stack."
    I wrote this for a school paper when I was 12 years old! Still don't have the Marshall but the neighbors thank me for that

    • @UncleDoug
      @UncleDoug  Před 10 měsíci +1

      It never hurts to dream :)

  • @Mountainrock70
    @Mountainrock70 Před rokem

    Doug at 56:43 -57:08 I was really feeling it and diggin’! I liked all your playing, but that was where the real magic took place!

    • @UncleDoug
      @UncleDoug  Před rokem

      I'll tell Ollie and Jack how much you enjoyed it, MR. Thanks :)

  • @preiter20
    @preiter20 Před 3 lety +9

    I see super amp tech has been here. A sad, lonely down vote. I have a dilemma now, because I am not super motivated to work on a Friday before a holiday weekend and Uncle Doug drops some amp goodness on us. I think a long lunch is in order.

    • @UncleDoug
      @UncleDoug  Před 3 lety +8

      Take the rest of the week off, Paul, and join me in scorning the slimy coward who voted "thumbs down" ;)

  • @TucsonBillD
    @TucsonBillD Před 3 lety +4

    Uncle Doug rides again!

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Thanks for joining us, Bill :)

  • @WilliamPayneNZ
    @WilliamPayneNZ Před 8 měsíci

    I am glad to find this channel. I am planning a couple of upcoming projects to keep my brain busy. Both being replicas of vintage Marshall amps. One being a jtm45 and the other being a jtm45/100. I want to be as authentic as I can be so great to watch these videos.

    • @UncleDoug
      @UncleDoug  Před 8 měsíci

      We're glad the videos are helpful, William. Good luck with your projects.

  • @Rich915
    @Rich915 Před 3 lety +2

    Another fine amp repair video from Uncle Doug! Two landmark amps, a JTM 45 & a Super Rvb! So much to be learned from your electronix expertise. --> Thank you for your candor 😉

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Thanks, Rich. So glad you enjoyed the videos.

  • @szaki95
    @szaki95 Před 3 lety +5

    ERIE caps are definitely original, I replaced a handful of them in my vintage Laney Supergroup.

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Thanks for the info, SK.

    • @szaki95
      @szaki95 Před 3 lety +2

      @@UncleDoug It was originally an american company, but i found some information about the UK branch:
      www.ourgreatyarmouth.org.uk/page_id__455_path__0p3p41p.aspx

    • @MichaelJWane
      @MichaelJWane Před 3 lety

      Highly doubt that it’s an original, most likely the cap would have been a Radiospares. Never seen an Erie in a mid 60’s Marshall unless it was a replacement.

    • @szaki95
      @szaki95 Před 3 lety

      @@MichaelJWane Well maybe it's not original for Marshalls but I believe Laneys are built with them, because in all the pictures you can see them.

    • @LD-cn1qe
      @LD-cn1qe Před 3 lety

      Actually that amp would have been Hunts (taken over by Erie in 1969 so no, not original

  • @AstrosElectronicsLab
    @AstrosElectronicsLab Před 3 lety +4

    Good job. However, you're cutting your clips short in editing cutting what you're saying off mid word/sentence.

    • @UncleDoug
      @UncleDoug  Před 3 lety +5

      The editing program cuts at even seconds, not fractions of a second, so occasionally a word may be truncated. I reviewed the video several times and only noticed this once or twice......which, hopefully, did not ruin the whole video for you.

    • @beachcomber2008
      @beachcomber2008 Před 3 lety

      @@UncleDoug Nice to be told why.

  • @raidensama1511
    @raidensama1511 Před 3 lety +2

    Oh yea! Time to sit back with a bowl of breakfast popcorn and enjoy Uncle Doug and Jack.

    • @UncleDoug
      @UncleDoug  Před 3 lety +2

      Breakfast Popcorn.....the breakfast of champions !!! Thanks, Raiden.

  • @holmes1978
    @holmes1978 Před 2 lety

    Sir you are amazing God Bless your excellence in your work !

  • @Rugbyman269
    @Rugbyman269 Před 3 lety

    How can something be so enjoyable to watch ... even though i haven’t a clue what doug is talking about .
    Wish i new more about electronics .

    • @UncleDoug
      @UncleDoug  Před 3 lety

      That's kind of you to say, Graham. Keep watching and it will gradually become much clearer.

    • @hubbsllc
      @hubbsllc Před 3 lety +1

      Definitely go through Uncle Doug’s back catalog and I can also recommend the channel Mr. Carlson’s Lab.

  • @jasonkeen712
    @jasonkeen712 Před 3 lety

    Great tones. Even on my phone speakers. I'm sure it's a million times better in person. Great video

  • @dhpbear2
    @dhpbear2 Před 3 lety +1

    Uncle Doug! That repurposing of a 1940s jukebox power cord shrowd was GENIUS! Worth the price of admission :) (25:40)

  • @LevRage
    @LevRage Před 3 lety

    Why would anybody put a "thumbs down" on a video like this? The dude is trouble shooting a 55 year old amp that he has never seen before. Great Video!

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Thanks so much, Lev. Don't waste any concern on the slobbering coward(s) who deface those videos they envy the most ;)

  • @robwatts7863
    @robwatts7863 Před 2 lety

    Above and beyond with that Erie concealment cap. Really nice work Doug👍

  • @dennisapplegate7553
    @dennisapplegate7553 Před 3 lety +1

    Watching this makes me want to build a 45. In 1970 I bought a Marshall Major 200 watt full stack , talk about a wall of sound. Thanks for the video great as always.

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Glad you enjoyed it, Dennis :)

    • @goodun2974
      @goodun2974 Před 3 lety

      I think it was Ken Fischer (Trainwreck Amps), formerly of Ampeg, who said he put Mullard KT88s in a Marshall Major and "sailed past the 300 watt mark".

    • @nevillegoddard4966
      @nevillegoddard4966 Před rokem +1

      Wow Dennis that setup must have been so awesome! Especially if you can play well.

  • @w.rustylane5650
    @w.rustylane5650 Před 2 lety

    I really enjoy yer videos. Keep up the great work and videos. I'm 70 now and still jamming. Rusty in eastern Tennessee

    • @UncleDoug
      @UncleDoug  Před 2 lety

      Glad to hear it, Rusty. Keep up the good work.

  • @nathanbouton6700
    @nathanbouton6700 Před 2 lety

    Baby A-be (Abhinna, Abe for short) loves to fall asleep to the steady even voice of uncle Doug. Works every time. Lol

    • @UncleDoug
      @UncleDoug  Před 2 lety

      I had the same effect on my students back in my teaching days, Nathan. Seriously.....glad to hear it.

  • @karst41
    @karst41 Před 3 lety

    Man another killer sounding amp,.The P90’s were spectacular. sadly the only pedal steel I heard playing was only in my head. cheers

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Thanks !! Our pedal steel player is in rehab, Kars. Maybe next video ;)

  • @PandemoniumMeltDown
    @PandemoniumMeltDown Před 3 lety +2

    You're so good UD, I'm not going anywhere anytime soon. I can only see your channel grow and grow. Heck, you made me go from "hmm what, let's watch this simple thing again" to "caps are bad" and "thank God for the current limiter" before you've said it. I know your teaching works, because it works. And your ethics are second to none. You are an inspiration and a great place to take knowledge as far as needed: all the way.
    Thank you and keep at it my good sire!

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Wow....thanks so much for all the very nice comments, PM. We really appreciate them and will definitely keep at it :)

    • @beachcomber2008
      @beachcomber2008 Před 3 lety +1

      More to the point than I could have been.

  • @GrowerTalks
    @GrowerTalks Před rokem

    I had to look up parsec ... Ha! Uncle Doug, you kill us! Love it. You make me want to acquire more amp knowledge than the difference between volume and attenuation.

  • @klauspopp8322
    @klauspopp8322 Před 3 lety

    Dear Uncle Doug and Jack, reg. the trimpot - it is not part of original circuit, and as you mentioned, obviously was built in years ago. Great video, to have the chance to look into the heart of the holy grail, Marhall JTM-45. Thank you very much !

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Thanks for your helpful input, Klaus. By coincidence on one of the schematics they show the pot, but add that "it is a nice alteration to the circuit". It really made biasing much easier.

  • @hubbsllc
    @hubbsllc Před 3 lety

    Thank you for a great doubleheader video, Uncle Doug!

  • @74cannelle
    @74cannelle Před 3 lety +1

    This thing sounds pretty good !

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Thanks. It's sort of like how the Mona Lisa looks pretty good ;)

  • @Ireland831
    @Ireland831 Před rokem

    Block end JTM45 chassis! Wow...I want one!

    • @UncleDoug
      @UncleDoug  Před rokem

      Apparently they are rather rare :) I hope you find one, Ireland.

  • @lexzbuddy
    @lexzbuddy Před 3 lety

    You are the man, Doug. Good job.

  • @brianhoffeller3876
    @brianhoffeller3876 Před 10 měsíci

    Hello Doug, both transformers should have part numbers stamped on them. Main is a 1202-55 and the output is 784-103. Great job and always a pleasure watching you work.

  • @PrinceOfBodom
    @PrinceOfBodom Před 3 lety +1

    Great to see this british guy fixed. Even after watching you repair a lot of amps, your videos keep the high level of entertaining and informative like the first video.

  • @ctcards2636
    @ctcards2636 Před 2 lety

    I still meet a lot of people who love Marshall amps and have no idea that some of them are based off other amps. One guy when I said his JTM 45 is a Bassman of sorts he was like "Marshalls are nothing like Fenders" haha. Thanks for the video, thats a clean looking amp on the outside for sure. (Still watching video).

    • @UncleDoug
      @UncleDoug  Před 2 lety

      Those people really need to do some research to clarify their thinking.

  • @nigman2023
    @nigman2023 Před 3 lety

    Another great amp repair thanks Uncle Doug.

  • @chriswareham
    @chriswareham Před 3 lety +2

    Jack doing a good job of upstaging the amp repair with his "cat in a box" performance 😆

    • @UncleDoug
      @UncleDoug  Před 3 lety

      He's a gifted performer, Chris. I just stand back and let him steal the show :)

  • @clayz1
    @clayz1 Před 2 lety

    There is life on youtube. Such an ignorant viewer as I, getting a peek behind the curtain. Thank you. I watch these in (mostly) mute amazement.

    • @UncleDoug
      @UncleDoug  Před 2 lety

      Thanks, Clay. We appreciate your time and interest.

  • @davidklang8174
    @davidklang8174 Před 3 lety +1

    MacGyvering the Erie cap was total madness. Bravo.

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Agreed, David, but trying new things makes life interesting :)

  • @davidsigglekow1349
    @davidsigglekow1349 Před 3 lety +1

    Your thorough on going technical trouble shooting proficiencies are astounding.

    • @UncleDoug
      @UncleDoug  Před 3 lety

      You are too kind, David. Thanks !!

  • @circuitblog01
    @circuitblog01 Před 3 lety +1

    Nice video thanks for posting

  • @romannumeral5547
    @romannumeral5547 Před 2 lety +1

    Many thanks Doug for the wonderful video. As usual it's full of great advice. Your knowledge and humour are greatly appreciated.

  • @triodeamplification5568
    @triodeamplification5568 Před 3 měsíci

    Uncle Doug is a master of documentation. I have 3 hard drives with my life's work on them. I just finished a Fender 5F11 with the selenium recto. I used the 330K across the 56K and 1N4007 diode anode to the 10K. Bias set at -31.00 vdc. I love these videos. I have been doing repairs for 45 years +. Don't think you know it all. At times you will run into something stranger than fiction. It's the little overlooked things like a bad speaker,Bad Volume pot or tube socket pin that is corroded and will not clean up enough to even make continuity. I said to myself one day, (Why don't you make a file to scrap a preamp tube socket. I wound up using a D string from an acoustic guitar that perfectly fits most any preamp socket and cleans (Files) the socket pins as new. I had a 5E3 vintage amp that would not turn on the cathode feeding the 6V6 power tubes. All the cleaner Deoxit in the world made no difference. Problem found and solved with that D string.. I'll never forget that discovery! I still use it when in doubt.

    • @UncleDoug
      @UncleDoug  Před 3 měsíci +1

      Thanks for your helpful input, TA. I'll give the guitar string suggestion a try :)

    • @triodeamplification5568
      @triodeamplification5568 Před 3 měsíci

      With B+ drained of course. @@UncleDoug

    • @UncleDoug
      @UncleDoug  Před 3 měsíci +1

      Always, TA :)@@triodeamplification5568

    • @triodeamplification5568
      @triodeamplification5568 Před 3 měsíci

      I've got to tell you I'm severely burned out. But if I have 5 amps in here I just have to pace myself and especially parts orders. And worst case scenario of the occasional bad tubes new out of the box.

    • @UncleDoug
      @UncleDoug  Před 3 měsíci +1

      I sympathize with the burn out. I have to take some time off occasionally to recharge the old batteries.@@triodeamplification5568

  • @vainwretch
    @vainwretch Před 3 lety

    Always look forward to seeing your videos .

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Thanks !! Glad you like them, VW :)

  • @MrAndfio
    @MrAndfio Před 3 lety

    Thank you for making me look into my Bugera amp problem...started with the fuse..and there it was a small fuse in a large fuse holder..rattling around..funny though the fuse holder was just a bit small for large fuse. so had to change the holder, works fine now. Thanks again and stay well.

    • @UncleDoug
      @UncleDoug  Před 3 lety

      You're welcome, Mr. A. I'm glad you were able to resolve the problem.

  • @ronnie5129
    @ronnie5129 Před 2 lety +1

    Uncle Doug, thanks for all of the video's and your Knowledge, Your the Best,

  • @rosettenzerrer
    @rosettenzerrer Před 3 lety

    My teacher always warned us from pointing with pencils into circuits. Carbon is very conductive 😀
    Good video about one of my favorite amps!

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Did your teacher realize that the carbon is completely encased in wood.....an excellent insulator? Thanks, B :)

    • @rosettenzerrer
      @rosettenzerrer Před 3 lety

      @@UncleDoug yes, but some pencils tend do be open on the backside, e.g. if the rubber is lost or someone sharpened both ends or even chew a piece off.

  • @rothbekirkendall7756
    @rothbekirkendall7756 Před 3 lety

    Sorry ,I'm late. Very clean and comprehensive job, (As usual). Your customer should, be very HAPPY with it. Great video.

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Thanks, RK. He is quite pleased :)

  • @martynh00
    @martynh00 Před 2 lety

    Hi. I have same model amp which dates, I believe from 1966, which I bought in 1979. It has the same block ends and GZ34 rectifier valve. The only difference is that mine has always had EL34 output valves. I was once lucky enough to visit the Marshall factory and Jim told me during lunch that they used whatever was available at the time. If the supply of a certain component dried up, they'd use another one. My JTM45 is still in regular use. In fact I will be gigging with it over the weekend. Nice to watch such an informative video.

    • @UncleDoug
      @UncleDoug  Před 2 lety

      Thanks so much for your input, Martyn, and best of luck with your JTM45. It's great to hear that it's still in action :)

  • @greblus
    @greblus Před rokem

    Uncle Doug, so wise, lovely, humble and... so relaxing to watch. My favourite YT channel.

    • @UncleDoug
      @UncleDoug  Před 9 měsíci +1

      Thanks. Glad to hear it :)

  • @edbyrnes
    @edbyrnes Před 3 lety

    I love amps, but I'm not an electronics guy. 90% of the time I have no idea what UD is talking about, but these videos are so calming and stangely hypnotic...like watching Bob Ross paint.

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Thanks, Ed. Bob and I appreciate your time and interest :)

  • @tandj34
    @tandj34 Před 3 lety

    Yay! Uncle Doug is back!!

  • @DBroce
    @DBroce Před 3 lety

    It’s like I’m in a high school and I like the subject, but you’re the class after lunch and after 20 minutes I’m asleep. I’ve watched this four times now.

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      That's because we make you feel cozy and safe, David.

  • @mutanthifi
    @mutanthifi Před rokem

    Thanks Uncle Doug!!! My Marshall 1978 Master Vol II (2104) just did the same thing last week that that Fender did - took out the 500mA HT fuse. Now I know where to start, although I ordered replacement can caps (3 of!) for the power supply anyway. HT fuse is a great idea! Shame though, those tubes (unmarked) sounded amazing, settled on them after a great deal of EL34 rolling as a teenager when I found myself with several sets. Also I checked the bias voltage and it was way down, so that probably shortened the time till death. It's a combo (topload) so you don't see red plating....

    • @UncleDoug
      @UncleDoug  Před rokem

      Good luck with your project, M.

  • @Eddy63
    @Eddy63 Před 3 lety

    Nice vid U D ... I think were gonna keep you around ... Lol ... Enjoy the long weekend ... Especially if your a Vet ...Thnx everyone for your service ,,,

  • @boinkmiguel
    @boinkmiguel Před 3 lety

    always enjoy watching and learn, thank you

  • @allsafe1
    @allsafe1 Před 3 lety +1

    Hi Doug, you yet again have done it, I was having issues with my Dumble clone build. I was watching your video on Oscilloscopes and you had an issue much like mine where you had parasitic Oscillation and mentioned fender put low value capacitors between grid and earth on output valves ,well worked a treat now no more weird noises she sounds fantastic Thought i would share it with you as my wife is perplexed as to why i would want to do this stuff , BECAUSE !
    To all you out there Doug is a wonderful teacher and an inspiration to me and many more. Thanks Doug it is people like you that make life worth living I really couldn't have done it without you. Nikk

    • @UncleDoug
      @UncleDoug  Před 3 lety

      I'm really glad the oscillation elimination technique worked for you, Nikk. Thanks so much for your very nice comments :)

    • @allsafe1
      @allsafe1 Před 3 lety

      @@UncleDoug Tell Ollie and Jack they are getting a very nice feel, strange I have watched so long I have been a part of them becoming talented musicians for Cats that is.

  • @PhuketMyMac
    @PhuketMyMac Před rokem

    Thank you uncle Doug!

  • @ourlifeinwyoming4654
    @ourlifeinwyoming4654 Před 4 měsíci

    Your careful conservation and preservation versus someone's rapid repair. A beauty like this deserves nothing less. Spectabulous - as usual Sir!

    • @UncleDoug
      @UncleDoug  Před 2 měsíci

      Thanks, OL. Glad you liked it :)

  • @MrSteveCasper
    @MrSteveCasper Před 2 lety +1

    When I saw that the old can capacitor had been replaced and left in the amp I thought to myself this is the perfect opportunity to learn how to restuff one. Thank you for doing it that amp deserved it and thank you for showing us. The bonus footage of the fender was exciting. Another great video brought to us by the Master.

    • @UncleDoug
      @UncleDoug  Před 2 lety +1

      Our pleasure, Steve. Glad you enjoyed it :)

  • @mickva3epm12
    @mickva3epm12 Před 3 lety

    Really enjoyed watching this! Thanks UD

  • @danielpirone8028
    @danielpirone8028 Před 3 lety

    Thanks for the video and especially the extra segment at the end!

  • @scott729
    @scott729 Před 3 lety

    Right on boss! What an amp! Thank you sir

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Our pleasure, Scott. Thanks !!

  • @jlore6344
    @jlore6344 Před 3 lety

    That was great, and it ended up sounding fantastic. Thanks for sharing.

  • @oneox958
    @oneox958 Před 3 lety

    I dunno who got into that wiring before you, Doug, but if I owned an original 60s JTM and saw zero effort to make any repairs look original, I'd track that guy down and kick him in the balls. Goodonya for doin it the right way and showing a little bit of reverence to a legitimate piece of music history.

    • @UncleDoug
      @UncleDoug  Před 3 lety

      Thanks -. We try to show respect, especially to historically significant gear like this gem.

  • @josedealva4205
    @josedealva4205 Před 3 lety

    new logo is nice! was not aware of it Uncle Doug. You have my utmost respect.

  • @gregj.gotham4402
    @gregj.gotham4402 Před 6 měsíci

    With the JTM 45 amp all dressed up working great, new tubes I hear why the P-90’s are so sought after. So perfect sound out of them from bass, mids, trebles just cloud like greatness out of them. Totally equal in volume. ❤❤❤❤. I started watching your channel some time ago. This rebuild I heard a smooth transition right in everyway. I thank you so much for all the lessons.

    • @UncleDoug
      @UncleDoug  Před 6 měsíci

      You're quite welcome, Greg. Thanks for your very nice comments :)

  • @CanadianRockerGuy
    @CanadianRockerGuy Před 3 lety

    You're the best Doug, great walkthrough and explanations!

    • @UncleDoug
      @UncleDoug  Před 3 lety +1

      Thanks for joining us, CG :)