Scratchy left channel

[wattsabundant]

If you find that replacing the pots doesn't fix it, the issue is the front end transistors Q1-4.

 

[Gepetto]

At $375, that is a beauty...

 

[WOPL Sniffer]

Definitely power OFF.
Did you spray it well with Deoxit?
Let that work in and do it several times.
Sometimes you will have to pull the top cover, and really get to it, and catch the corrosion as it comes pouring out.
They can get really cruddy (technical term) and a good cleaning (hopefully without disassembly of the pot) will do the trick.
Hope that helps.

Don't just DeOxit..... You need Fader Grease or D100. Otherwise youll be doing it again soon. A properly Sprayed and LUBED pot will last a dozen years (then the lube drys out and makes the hard to turn)..

 

[Vintage 700b]

Agreed

 

[gene french]

Don't just DeOxit..... You need Fader Grease or D100. Otherwise youll be doing it again soon. A properly Sprayed and LUBED pot will last a dozen years (then the lube drys out and makes the hard to turn)..

good to know...

 

[MusicSteve]

good to know...

Gene
Here is a good video, Sorry you need to spend more money lol
W the Pioneer and w tons of switches and Pots and using DeoxIT for the pots which only works for 6-monthes and could do damage to the Pots.

 

[gene french]

Gene
Here is a good video, Sorry you need to spend more money lol
W the Pioneer and w tons of switches and Pots and using DeoxIT for the pots which only works for 6-monthes and could do damage to the Pots.

thanks music man!!!

 

[WOPL Sniffer]

Don't just DeOxit..... You need Fader Grease or D100. Otherwise you'll be doing it again soon. A properly Sprayed and LUBED pot will last a dozen years (then the lube drys out and makes the hard to turn)..

HUH??? I see I made an error for the team,,,,, I should have looked at my notes since the memory is toasty..... The correct number for the fader lube is F100L which is used after the D5/F5 spraying regimen. After the initial spraying with the D5/F5 , treat the pot with some fader grease since the sprays use the Flushing Action and you have just washed the grease away from the factory. So, use the D5 or F5:


1.) The D5 or F5 flushes all the skuzz away https://caig.com/fader-f-series/

2.) The DFG-213-1 grease replaces the factory goo https://caig.com/product/deoxit-fadergrease-dfg-213-1/

3.) Add a drop or two of the F100L to help keep the pot from feeling stiff https://caig.com/product/deoxit-fader-f100l-l25c/


These are not cheap products but they work very well and in the long run, these save you time and money. I built Skipshot's beautiful pair of Clair Brothers 700 II amps in 2015 and he just started to have a noisy pot on one of them so the process lasts about 8 years. Some get much longer results. Use this process and ensure great results. We use this regimen when I worked in the trons shop in the Navy and it works.