I want to clean the volume pot which is scratchy before I sell it next month.

I took out all of the screws on the bottom, but the darn thing still doesn't open up.

I should say all the screws except there are additional screws that hold in two square black plates or doors - one on the left side, and one on the right side.

Do I need to remove those doors too?

Opener beware!!.....is all I have to say...;-)

Just a tip...usually a scratchy pot (especially those of modern manufacture) is only fixed by replacing it.

These days the old trick of blowing them with compressed air does not work much at all....The carbon tracks that are inside the pot are so thin nowadays, that cleaning is more than likely not going to fix it...

The upside is that pots, even PCB mounted ones are pretty easy to replace, just make sure you get the correct impedance on a replacement.

Dennis

I agréé Dennis.......let à pro techie fix it

Beaky,

Remember that old song "Walk Away Renee" leave it alone,
it will bite you.... what it was made they will have bought in a load of pots and there won't be any more around that will fit,unless you can find a KB breakers yard.

Not true Tony - pots are standard manufacture and are widely available and in all the various mounting configs used by pretty much all manufacturers. There is nothing proprietary about them at all.

Beakybird – Don’t

I opened up three different Technics keyboards, no problem.
I opened up a Psr 3000, it ended up in a repair shop.

John C.

OK, I get the message. I thought that since I did brain surgery on myself I could do this, but I was wrong.

Yeah, I have a book about do-it-yourself brain surgery. It's called
"Suture Self."

Larry,

It shouldn't really be much of a problem. Just take it slow and don't force anything. I was a tech for 10 years. If the pot isn't sealed try a little WD40 in it. Spray it and work it back and forth. If it is sealed bend the little tabs back a little to create a crack in which you can get a little WD40 in there. Squeeze the tabs back and it should be good to go. If you need to replace the pot go to Radio Shaft get some solder wick to unsolder it. Get the right resistance pot and solder the new one in. I doubt you will need to replace it. Good luck.

Tom

Larry,

I've opened the PSR-740, 2000, 3000 and S900 and never had a problem. I have NOT opened an S-910 yet, but I wouldn't think it would be difficult. However, if you don't have any electronic experience, I wouldn't recommend undertaking this task - too many delicate parts.

Good Luck,

Gary