#59 Yaesu FT 101 Series Part 1 Preliminary Test
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- čas přidán 5. 07. 2016
- In this video we look at the 10 dollar flea market Yaesu FT-101. I installed the missing boards and components and we give the radio a over look to see where it is electrically. Inside we find the Mylar capacitors on the audio board have heavy moister damage. We also discover the wrong audio board was previously installed.
Foxtango website
foxtango.org/foxtango001.htm
Ft-101 service manual:
www.foxtango.org/Manuals/FT-10...
My Site for discussion:
gokarters.com/smf/index.php?to...
I came to your videos late, but still great to watch. I have to get my old 101 up and running.
Your videos, method of explaining things and knowledge is incredible. I just acquired an intact but dirty 101e that seems promising to bring back to life, thanks for the help.
Thank you
Recently I was given one of these radios by a ham who no longer was interested in the hobby. The radio had been boxed up in a closet for a few years. I have not tried to transmit with it yet as I want to make sure all is working first. I know it lights up and none of the switches or controls seemed to be locked up. Your videos are GREAT! It is helping me learn more about this rig. Thank you!
Thanks Perry. They are very nice old rigs. Make sure the capacitors are ok, replace them is the best way. These radios will give great service for many years. Thanks for watching.
You absolutely amaze me with your knowledge and your array of test equipment and inventory of radios. I just love watching you work on equipment. You obviously have years and years of experience and education. I am curious about where and how you got started in your electrical education. Thanks Buddy thanks for your awesome videos.
Thank you sir! So much better than watching television, looking forward to the next installment
You are welcome. I never watch television. I love watching youtube repair videos also. So much better and more educational.
Thanks for taking the time
......really enjoy following along...
Thanks for watching!
What a great video. I like the detail you show. I appreciate the time that you take to show us the way to preserving these wonderful old radios. 73 NE5U Mike
Thanks Michael for the very kind words. I try and do this so everyone can understand with out all the techno stuff. I believe in keeping it simple. Thanks for watching and the next part will be out soon.
Just got a fairly nice EE but does need some work. These videos are invaluable! Thank you Sir!
Wow! The condition of all those caps on the audio board is horrible, no matter what the age. Nice to see you regained audio control with a substitute board. Thanks for sharing. Looking at Part 2 now. :-)
Great, great, great video. Thank you so much! I'm really looking forward to the rest of this series.
Thank you very much Robert. Stay tuned as we go through these radios one step at a time.
I am really enjoying your channel. Got my license in ‘78 and I have a couple of tube radios. You make it look so easy. I enjoy watching an am learning a lot.
Thanks Rod. It is a fun hobby.
Thanks for the video!
I got my FT101E about 2 years ago and had to learn all this the hard way :-)
Having these vids are a great resource for our community.
My mylar caps have little vertical cracks in them but they are still working fine. But I guess I should be thinking about replacements.
Hi Will. I was in the same boat as you. Was just not enough information available to repair these. Different story if you could join the yahoo group. I chose not to and learn what I could the old fashion way. Yep, those old caps cannot hold the water. Thanks for watching.
Buddy bring them back alive good work Thank You
Thanks Wayne. We have to keep them going.
I really enjoyed this Video, it makes me appreciate the instructions that I received in School much more.
Thanks for that very nice comment. I try and make things understandable.
I have a FT- 101E sitting under my bench waiting restoration.
Iam watching this series eagerly.
Thankyou for sharing your knowlege
You are very welcome John. Those radios are as fun to work on as they are to operate.
This segment helped me clean the relays in my “E” and “B” models. I trimmed the eraser to a wedge and used the cut-offs with tweezers to clean the stationary contacts. Worked really well. Final clean-up with Deoxit and heavy paper and it all ended super clean.. To use both sets of relay contacts it seems one could simple use jumpers to connect the three sets of contact pins on the relay socket. I really hope you go through the full alignment process on a future video - I’m not really confident with this without a spectrum analyzer. Thanks and I’ll keep watching. Zack, KC5IS
Excellent... very informative... looking forward to the next one... learned a good deal from this one on my to restoring my own FT-101E... thanks very much...
Thank you very much Paul. Glad you like them.
Hi, Buddy. I just wanted to take a minute to thank you for posting this series. Several months ago, I became the very proud owner of an FT-101E. The rig has very good receive, but has no transmit power. I'm an electrician, not a tech. But I'm determined to bring this old rig back to life myself. Your first few videos have walked me through testing out the receiver. I'm subscribed to your channel and looking forward to your next video in this series. Thanks again. 73 Jim - KG5MPD
Thanks Jim. We will get to the transmitter soon. So much to do and thanks for subscribing
Oh, how i love to watch you working on those rigs ;) Great videos, makes me want to get one also, but I will have to finish my FT7 first before starting new projects. Till then your postings will have to do. Already looking forward for the next one !
Oh neat. Have not seen an FT7 in many years. Good luck on that rig and thanks for watching.
Great video can't wait to see the following parts
More to come my friend. Thanks
Great technique Buddy. I recently recapped the large electrolytics on my Drake C-line (Hayseed Capacitors makes great "re-stuffed" cans for a bunch of old rigs) and, less the mods done over the years, it's amazing how radios can still look like new after coming up on 40 years! 73 - Dino KL0S
Hi Dino. Yes Hayseed Hamfest capacitors are the best. Makes those old rigs look great also. I would use nothing else in the Drake line for a recap. Take care my friend. Buddy
I just ordered replacements for my FTdx-560 PSU from Hayseed Hamfest. Their service is outstanding and the quality of the caps is first rate. The caps are not stock items but they made them for my unit. The pricing is great too. Can you tell I'm a fan of Hayseed Hamfest?
Great stuff. Coincidentally I have recently acquired a 101EE. Looking forward to your next video. Alan
Thanks Alan. really nice old rigs once they are up and running. I pleasure to talk on. You will enjoy it. Thanks for watching.
Excellent video !!! Thank you,,, I also have the FT-101EE
I had a 101E. Nice piece of equipment. The relay in mine began playing up. I've never seen mylar capacitors like that. I sold it and went homebrew and QRP.
73, Bill, G4GHB.
Nice ... i will wait for the next episode with this beautiful radio ... he come back to lifeeeeee .... very good
Stay tuned my friend, so much more to come. Thanks for watching.
Excellent - Excellent - Excellent. I have a late model 101E that I am overhauling here in Brisbane Australia - Great photography on the audio PCB. Watching with extreme interest.
Keep up the good work - more 101's will live again.
VK4HDA
I will be uploading a lot more videos soon. So there should be quite a few of them online. Just takes time. Glad you find them to your liking. Keep us informed on how your rebuild goes. Thanks for watching from Down Under.
wow Buddy really nice video. full of information. the Ft-101 is a radio i know nothing about even though it was one of the most populer radios available when i first came into the hoby so its nice to see a video like this. thanks Buddy this is really usefull information.
Thanks Gary. These are some wonderful old radios. Glad you liked it.
10$ ? Cannot complain about that. :) Another good thing about videos like this is it is a grand tour of a rig I may have never considered owning. Now I would not mind checking one out. Thanks.
Thanks. They are great old rigs and easy to work on. Thanks for watching.
This is a great series. Thank for doing this. I love my FT-101EE and fortunately I have had to do very little to it so far but if I need to your efforts will certainly make it easier. 73 N7IBG Bill
Thank you very much Bill. We have to keep these old rigs alive and kicking. BTW, beautiful place you have there. Thanks for dropping in and chatting with us. 73 Buddy
Hi Buddy, Great video on one of my favorite radios. Makes me want to get another one. I looked at two or three in Dayton this year but I thought they were too high priced. Thanks for all the tips you put into these videos. Keep COOL! 73
Hi Larry. Hamfest used to be the place to get deals. not so anymore. Unless you catch someone selling out of the car. There are deals there. I found them at the strangest places. 114 degrees heat index today...Thanks for watching. Buddy
Video repeats the split Mylar caps footage at 45:08. Excellent video
What a good thing it is when one can see physically what is wrong. If there is no visual then you have to start trouble shooting it.
Seems more and more of these old rigs shows signs of fatigue. So a lot of times the problems pop right out. But troubleshooting is fun.
Very interesting video Buddy - looking forward to the next one. 73, Bill.
Than you Bill.73 Buddy
Thanks have learned a lot from you about my radio 73. John
Thanks John
G'day buddy, This is a good series ,I'm checking my FT101B seeing if needing improvement with your instructions. This is awesome a free tech knowledge. I didn't know about boards in the B's different numbers . I'm learning mate! lol
G'day to you Dennis. If you have the service manual look on page 5-1. You will see a listing for an early and late 101B. The regulator board, HF IF board and audio boards are different in the two models of the "B" series. Look up your serial number for the correct version. Once you learn all the circuits in the 101 you will see just how easy they are to troubleshoot. The most complicated circuit in them is the band switch. It has 13 wafers and they all do something different from switching voltages to changing IF paths. Glad you like the series mate. 73
MATE I am very happy with the series on FT101 you just don't get blokes who give you this information. Cheeers & beers mate.
Thanks. Yes some folks like to hold information. I like to share information. More to come mate. Cheers to you.
Buddy, Great Video. Thank you very much!
You are very welcome Barry. Thanks for stopping in.
Hi Buddy! Just re-watching this video again. Amazing stuff!
Have a pair of these radios here. An FT-101EE (late) model that I bought at a hamfest some 25 years ago, and an FT-101 (late) that I bought about 5 years ago from an estate sale. Both radios sat for many years in a damp basement while life was in the way. Troubleshooting them now. I'm finding the brown, waxy caps to be split in the EE, much like the ones in your video. Your moisture theory sounds about right to me.
Would you be able to comment, or make a video, about the voltage chart and the resistance chart in the manuals please? I've got a few questions about them that I haven't found answers to anywhere. I know that I could ask these questions on a a variety of forums, but often find responses from the many "armchair" techs that don't actually work on old gear. I believe that your knowledge and experience with these rigs is amazing!
My questions are:
1. On both charts, are all measurements referenced to chassis ground?
2. On both charts, what is the difference between "0" and "E", like Pins 1, 2, & 3 on MJ 2? (maybe "E" = "chassis ground", and "0" = "not chassis ground, but voltage should be close"?)
3. On the resistance chart, what is the meaning of the symbol that looks like an "X" with 4 little dots, like Pin 10 on MJ 1, or Pins 4, 17, 19, & 22 on MJ 4?
Thanks for your time, and for ALL the knowledge that you share.
Cheers,
Alan
Very Nice work.
Thanks for watching MrMac, always a pleasure t0 see you.
Great overview of one of the most popular radios ever made. Had to laugh when I saw those cracked open capacitors. I did a video on bad poly caps several months ago. Looked just like these only they were green drops. Just more stuff for us to keep a eye out for.
Thanks Mike. Yep those caps reminded me of you when I saw them. I said to myself Mike is going to laugh lol. But we have to keep the age of these in mind. Take care brother. Going to work through the deaf receiver now. Wish me luck..
+The Radio Shop
Fingers crossed for you. Can't be worse than my week has been. Radio after radio of nightmare and oddball problems.
I hear that Mike. I have had weeks like that in the past. Since I get to pick and choose what I work on now not as bad. BTW, did a little trick on this 101 and the receiver is promising.
+The Radio Shop
Good to hear. Really have to wonder why someone was parting it out. Overall it looks to be in fairly good shape. Guess someone didn't feel like replacing all the bad caps.
yep, someone probably did not know how to do a proper fix. Bought a non working unit to use for parts. Hence the wrong audio board installed. When they installed the audio board in their radio most likely did not fix that problem either since the jumper was installed. Radio is in decent shape though.
Still a lot to do Buddy with the caps.. Excellent video. Thanks for sharing 73
Always the caps Peter lol. Thanks for watching my friend.
Thanks for posting!
Thanks for watching!
thanks for the informed video
Love your videos. Seems like one of the best instructions on how to go at actually repairing the FT101s. Since I am a noob on this I've got a question regarding the capacitors:
I found some Mylar caps with cracks in the coating on the audio board and C18 of my FT101B, but they are quite small. You said on one of your boards they tested okay. So I wonder, do I have to unsolder them all to test, or can I actually test for fault in-circuit? (PS: Audio level adjustment and RF amp seems to work.)
Oh and what did you use to clean the boards and case? Looks so much nicer than my rig.
73
I think there is an "RF out" BNC jack on the back panel for connection to a spectrum analyser/'scope etc. I think it is a few volts (3v?) peak to peak.
That is correct Peter.
I love your videos, especially the FT-101 series. I was wondering if you could do a video showing how to test various things without special equipment? An example is when your tested the transmitter you used a spectrum analyzers, most of us don't have one. I'm making this request as a Patreon supporter too, so either here or on Patreon it would be greatly appreciated. I was gifted an FT-101 in great condition recently, I would like to slowly restore it with the apping and the like. Thanks!
You can access some of the voltages on the ACC socket on the back panel...
This is correct.
Excellent videos. Big help with my ft101e. What is your opinion on changing the finals to 6146 tubes?
Thanks for this video really enjoyed watching it. I also have been one of these radios mine is in good shape but the rx and tx are not aligned. Perhaps you could do a section on aligning the rx and tx freq 73 de ve2ota
Read you comment earlier. Just finish shooting a video on how to do this. Will get it uploaded in the next few days.
I got a YAESU FT_221R. The audio board has the same problem, every mylar cap is splitting open and deteriorating. Others as well. I wanna add a PL tone generator in place of the out of date tone board. Will need to do some work on those caps though. You know anything about the PA reliability in this radio? I was gonna crack it open and if it seems good shape I may rework and restore radio. The radio actually works, seems put out full 14 rated watts into a load. hard to hit reapeater without pl tone though.
Great video Buddy. You mention cleaning all the controls--Do you have a video in which you demonstrate your methods for doing that? Total newbie here.
I shown bits and pieces in a few videos yes. Just about any video where I am working on vintage gear. Not hard to do and will show the process again in an upcoming video
I have the same mylar capacitor issue. Can you advise where you bought yours, and whats the name on the parts listing in the Yaesu manual? Thanks, VE7ER.
I have a FT101 and have had to disconnect the resistor R2 1K 1/2 W as it starts to smoke. This is a long shot but any ideas there to start looking ? Many thanks.
Great video. I have a yaesu 101 mk2 and i also have the same problem with the -100 off the rectifierboard, mine reads -170. But i never heard how you corrected that ?
Back when these units were made the typical line voltage was 110. Todays voltage can reach up to 122 volts. This will make the secondary voltages higher. You can use a variac to lower the voltage and see if the secondary's are more in line with the manual. If still high then start checking components in the supply.
great fault finding!
Thank you
Really appreciate you taking time to explain how to repair the 101 ft series..I know it's a widely used transmitter and they get really hammered and abused..been thinking about repairing them as a at home hobby to keep me busy when I retire... looking to see if I need a license to repair those rigs...any advice would be greatly appreciated..thx
You really do not need a license per say. But to test properly at least a general class amateur's radio license is required. I have made contacts using a dummy load before.
Thx for the knowledge..will be looking into studying for that test !!!
Sir - Do you have a video installing a PB-1534, my 101 is one of the 180 series so it's pre-wired with processor switch, I did all of the pre and post power up tests and all readings were per documentation however with the processor off I have modulation, on there is nothing, thoughts/vids?
Very good video. Eagerly awaiting the next one! Best 73 de Alan G0NFY :)
Thanks Alan. Hope to get the next part done soon.
Just curious, how did you fix those voltages that were off, especially -100 v?
so the audio board that was in it when you got it was the wrong one?
Hi From the UK. I am watching your series on the ft101 with great interest but find that the jumping around trying to find the next chapter is a bit difficult. How about put the 101 series all onto a dvd which we can purchase from you. My old 101b needs a doctor like you, although I have managed to get it working sort of. It really needs a total alignment / re tune. Keep up the good work and thanks for helping us keep these master pieces on the air.
John
Thank John for the comment and suggestions. I have never thought of doing that on DVD, Perhaps that can be a reality once the series is complete. Thanks again for watching.
Hi Buddy,
For relays, I've used the cardboard from a " Big Chief" tablet (a hint at my age and I hoard stuff). What about using a contact burnisher, such as a P. K. Neuses Inc. CB-6 Contact Burnishing Tool. Will that jeopardize any coating that might be on the contacts?
Hi, I never use a burnishing tool on contacts. Yes it files the coating off. Man I have not seen a Big Chief tablet in ages lol. Business cards work great. The idea is the clean and inspect as you know. One the coating is removed they will arc constantly and have to be replaced.
@@TheRadioShop please help. About how much RF out of the antenna port with just the 12by7a in line and on. I remember you saying about a watt. Mine is not making anything near there. Using a Motorola service monitor and spectrum analyzer mode to see sig. Any direction from here would be greatly appreciated sir.
What do you charge to work on a yashoo ft 8800 it was in a car accident an can't here the repter and can not put the voice out but the Meyer says it putting out?
Hi Anthony. It is hard to give a general price. Sounds like it could be as easy as finding a plug came off due to the accident. or a broken board. I would open it up and see if anything looks out of place to start with. You can email me at kc4umo@gmail.com
Can you go back to the jumper from pin 20 to 19 you said you would get back to it but I can't seem to find anything on it.
Would love to view an FT-101 transformer replacement start to finish
If I do one I will post a video on it. Thanks
G'day buddy where do you find the serial number for the correct version is it on the back of the backing plate? My plate is new and all shiny, and NO numbers. I'll try and check some of parts.
Just above the S)-239 connector there should have been a tag. Would have Yaesu on it plus the serial. Possible it got removed. It was a type of stick on decal.
What does it mean when you have low output on side been high output on a.m.
OUTSTANDING ! ! ! ! ! N5MRZ
Thanks
Why does the unexpected over voltage condition of the power supplies not bother you more? It could swamp the caps which are probably weak anyway and possibly create more problems.
hello great vedio, can i ask , that some do a vedio on yaesu ft-101 on how to tell if the transformer is working on 110 vac us or 240 vac and how the change working voltage from 110 vac to 240 vac australia? thank you. please.p/s indepeth vedio please.
hi..I restored a ft901dm. Do you like the ft-102's?
Good deal on the 901. I have always wanted a 102 but never found one that was cheap enough to get. These are great radios and was the last of the kind in the Yaesu line.
Good Stuff.. :)
Thanks Sue.
Interesting Video, I would be interested in know what the 6V power supply measures if it has not been ajusted from its factory settings. I am looking forward to your next video to find out how you are going to tackel the poor receive on these radio's.
I have checked the 6 volt line and it checked at 6.8 volts. The 6 volts is derived from the upc141c IC on the regulator board. it can be adjusted with VR2. As old as these radios are I t would be unlikely to find one that has it's original factory setting. Thanks for watching, more to follow.
Thanks for the reply, Because all of the voltages measure on the high side with our digital meters compared to the values on the circuit diagram, and the Clarifier is offset if you set the 6v supply to 6v, I am asuming that it would be set to a higher voltage than 6v and 6.8v could be the right voltage. I look forward to further Video's
Thanks Clive for taking the time to ask questions. Be warned that some of the steps in the SM are backwards. It ask you to perform some IF adjustments then later ask you to set some of the voltages. When you do this it throws your IF adjustments off. So this is why we check those voltages in a beginning test. just to make sure they are somewhere close. Back in the day these radios were run on 115/117 volt line. Todays mains supply a good 121 to 122 volt main. This is why those readings are much higher now. When we get to the alignment and tune up then we will address those settings. Getting the clarifier and "zero" volt readings are very important. thanks for these questions.
Thanks for the reply, I live in the UK where we used to run the radio's on 240v, but now have 220v, the voltages are still higher even though the voltage supplied has fallen. You are correct you must measure the supply voltages before anything, so don't follow the manual blindly. Can I bring to your attention that their are several 9V supplies that you didn't measure in your video, I was wonder why you didn't or will you be measuring these in a later video?
Yep, I had to go back and check in the video. I did say that we would not worry about the low voltage supplies at this time. Although I did check all the voltages prior to the video. I plan to have one video on just the supply rails. It does make me happy to see folks paying attention. Thanks!
It is weird seeing what looks like Russian ceramic capacitors in this transceiver, I suppose some Japanese transceivers use the Phasing SSB modulator/demodulator, could the Noise Blanker circuit not be working which would be really weird as the noise blanker can really clean up the signal, could recap the board, could the audio board have got over heated or something.
David, sounds like you have done your homework my friend. The noise blanker board has a lot of impact on the receive signal. And is also mostly overlooked when hunting down receive problems. Keep your eyes on TC-1 and T-120. They will be covered in the next video. A lot of parts for these rigs were "off the shelf" parts in the 70's. Not a lot of custom parts were used.
What was causing the God awful racket at 15:22 when you first turned on the radio? Was that caused by all the bad caps on PB1315?
Yes, all those bad caps are causing that noise.
I thought so. My transformer came in yesterday so I'll be wiring that up probably this weekend and probably watching these 101 videos a few dozen times.
Buddy, My radio has a PB1189 that is missing the STK401. Can I substitute a PB1315 in place of a PB1189?
Jon, Which model of the 101 do you have? You may have said but cannot remember. The PB-1189 was from the old 101 that did not have a letter behind them. The "B" model and up used the 1315 board. As far as I can tell the 1315 was an upgraded board of the 1189.
Scroll down a third of this page and you will see "Construction" Under that is the block diagram linkwww.qsl.net/nw2m/
Also at the moment I cannot verify that until I know your model number.
Buddy, As far as I know it is a late model 101 without the letter. From the board schematics, it looks like the 1315 uses a AN-214 in place of the STK-401
Late model did use the 1189. I am searching for the schematic on the 1189 to see if it is compatible, Don't see that schematic in my service manual yet....
Excelente trabajo aunque no hablo inglés supe de que se trata el tema
Gracias, me alegra que puedas seguirnos
Hi Buddy,
Thanks to your videos, I have my 101 up and running but still need to go through the receive and transmit. When I got this radio, it didn't have a speaker or mounting plate. I bought them off of eBay, but can't figure out how the speaker mounts to the plate. I know it should be simple but ....
Is there any way that you can show how the speaker mounts from the back?
Jon, thanks as always. I will take some pictures and post them on my website. When I do this I will send you a link. Thanks again for your comments. Give me a bit and I will get these posted.
why not link the vids to this in sequence?,seems there scattered all over the place!
They are in the playlist in order
BTW--You got the whole radio for $10, right? I'll give you $10 for the cooling fan! Good score.
Well yep, but was missing a few things. She is mostly working now. One day I will get back on this series.
i like the video then agine i like all your videos good job from ricks radio shop
Thanks for the very kind words Rick. I appreciate it and thanks for watching. :-)
Wahtassap por gentileza estou com um 101e com defeito
Very good how to repair 101
Thanks Laird. Many more to come.
That baby is clean inside, more please, Les G4XMX.
Yep for a 45 plus year old radio not bad at all. More coming my friend and thanks for watching.
73s and 69s Good buddy
Same to ya!
Man a lot of caps are bad! Tech's nightmare....
so the audio board that was in it when you got it was the wrong one?
Folks think the radios are all the same. but Yaesu did make a few changes along the way. Yep, wrong board.