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Cleaning Marshall guitar amp potentiometers
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- čas přidán 25. 02. 2019
- This is how I cleaned the potentimeters to get rid of the noise when turning the knobs.
I don’t take any responsibility of the intructions but at least with my 35 years old Marshall Lead 12 this worked OK. All scratching noise was gone and potentiometers work now very well.
Remember to disconnect the power cable before opening the cover!
...and sorry about the end. Mark’s legato is better than mine but had to test the cleaned knobs.
Absolutely brilliant video, to the point.... I bought a second hand amp a few days ago which was very crackly and this video allowed me to fix it and I'm delighted now... my first time fixing a problem on an amp as well, I'm very proud of myself! 😂... thanks so much
Glad to help Derek! Greetings from Finland! 👋
I can’t believe that I found this video! And I can’t also believe that still useful and good people exist on the Internet! Thank you so much brother! Your video saved my two amplifiers.
Nice! 👍
absolutely love that you played Mark knopflers fill-in lick from "calling elvis". love it big time, cheers!
Thanks, this helped me get mine up and running again.Love the bit 'Calling Elvis' at the end there too :D
Awesome, just got my old amp and guitar out for my daughter and it's crackling. Typed in on here and it's the exact same amp haha. I shall be doing this over the weekend for her.
Nice video mate!
Thanks. It worked. Especially turning. A lot of turning!
Bartlomiej Piech Glad to hear! 👍
Lovely amp. I own a 5205 Reverb.
Thnx, worked like a charm 🎸🎶🎼
I had to replace a regulator last week.
I got new original controllers online...and I'm really happy that I was able to save the Marshall :-)
What are the proper pots when replacing Thanks
I have an old Marshall Valvestate Bi-Chorus 200 Model 8280
2x12 Celestion G12T speakers ... it has alot of static noise with the pots and at times cuts out altogether
Remedy?
Thanks for this video, it helped a lot :-) Who's that lick you play at the end from ? I've heard it so many times, but can't remember who plays it :D
Glad to hear! The lick is from Calling Elvis by Mark Knopfler. It’s a Dire Straits song.
Pähkinä yeah that’s it ! Cool lick ;)
Going to try this on my Lead 12, getting lots of noise when turning the dials at the moment.
Edit: my speaker cable was so short I've had to disconnect it to remove the box, will have to solder back on after.
Nice tutorial. Simple and useful. Is it possible that this solution works for unresponsive knobs? I mean not completely unresponsive but my bass knob doesnt seem to work properly.
Go ahead and try. Don't think it will do any harm. Glad you liked the video!
Do you have to de charge the capacitors before touching in there? Never tried this before
Don’t know, I just unplugged the amp from 240V and waited some time before opening the cover.
OK, people listen carefully, do not touch capacitors that are charged, some of them hold enough charge to kill you.
Is there any danger in spraying on the board? Or plugging it back in while it's still wet? Did you wipe it off?
This spray vaporizes quickly, no need to wipe.
I have the same amp, but there doesn't appear to be holes in the pentiometer. Will the oil (liquid grease?) get in through to the inside?
Blackdog4818 Yes there’s actually not much oil I think, it just freezes the dirt. Spray from different angles and many times, hope it works.
Some contact cleaners are flamable until dry, wait until everything is bone dry (deoxit d5 is definitely flammable while you wait and takes 5 to 10 mins to dry)
On my ROLAND JC 50 the potentiometers are cleaned with WD 40, which has oil in it.
The amplifier has been working great for 10 years.
I don't recommend oil.
Cool and no bad comments so must be cool have an old valvestate.could be interesting.thanks
Thanks! Did you buy it in Norway?
No I live in Finland. Bought it 30 years ago here.
@@pahkina1167 I see. But the sign on the back is in norwegian. There is also a marking on the "N".
@@pahkina1167 2:37
@@andreas5153 That's possible. Bought it from a music shop and it was a preowned then.
@@pahkina1167 Great amp though! I run the head version through a 1969 4x12 with greenbacks. A fantastic combination.
Hello what cleaner should i use? Can i use ed 40?
Milliard Alaras Use the same as I did, see the video.
Deoxit D5 (search amazon as the link Is excluded from direct linking)
Nice. I'm going to try to something similar on Marshall Valvestate. First time I've ever seen someone NOT use De-ox-it spray. I've been using it and I think it's okay. Curious about the brand shown here. Thanks for the great video!
Deoxit does not have oil in it either
@@matthewmcdonald4222 there are three versions of Deoxit: D5, DN5, and D100. D100 has no solvents but D5 is highly flammable, feels like oil, contains aliphatic hydrocarbon. Given the residue it leaves behind - I think it has some oil based substance. It does work though so I’ll keep using it until I find something better.
Deoxit D5 does not have oil in it and as for being flamable who cares because I'm not putting a lighter up to it and it dries in seconds
@@matthewmcdonald4222 I disagree. I can wipe the residue off with my fingers, a cloth, days after.
@@raymondjiii then you must be over spraying I don't know what to tell you nobody else has said that
you ve sprayed the whole board. didnt that caused any problems
No it didn't
Maybe do it upside down so your spray doesn´t flow over the main circuitboard.
Why are you pulling off the buttons and spraying them on from the front? The controls have a hole on the inside! You spray the spray in there. That's easier. I have 8 Marshall Lead 12(reverb) I've done it so many times.. That's what the holes in the controls are for.
Will WD40 work?
Not really
my amp is louder!! it goes to 11