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 Forum index » DIY Hardware and Software » Developers' Corner
rotary encoders
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bantri



Joined: May 15, 2005
Posts: 149
Location: brazil
Audio files: 1
G2 patch files: 32

PostPosted: Thu Mar 06, 2008 2:59 pm    Post subject: drifting potentiometer Reply with quote  Mark this post and the followings unread

drifting? uhoh...

it seems like worn potentiometers...

replacing them is the right choice, but you can do a patch... (at your own risk)

there is a spray for this, i´ve seen once in an electronics repair shop, some 25 years ago and the guy was getting easy money from dumb clients just using it for repair instead of doing the right replacement procedure, but i caught him on the act and this is why i remember.

NEVER use petrol based lubricant sprays like wd-40 inside the potentiometer as they can melt/soften the fenolite substrate that holds the thin carbon layer, the result, after some time, is disastrous.

the one i´ve seen was called

lube-a-trol (yellow can with black letters)

and if i´m correct, it was designed to be sprayed inside potentiometers.

it sprays a grayish foam that can extend a little more of the potentiometer life, while searching for a new one.
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Pehr



Joined: Aug 14, 2005
Posts: 1307
Location: Björkvik, Sweden
Audio files: 2

PostPosted: Fri Mar 07, 2008 12:08 am    Post subject: Reply with quote  Mark this post and the followings unread

banzaieffects.com should have similar knobs, but it takes abt a month to get the order...

and there's elfa såklart... Rolling Eyes

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