In message , "Dave Plowman (News)"
writes
In article
,
jim wrote:
poss OT but it's DIY :-

I have an old but nice Yamaha bass amp combo which has had scratchy
pots since I bought it years ago - they are nearly all (volume, tone
etc) scratchy to a greater or lesser extent.

How feasible is a DIY repair? I am ok with a soldering iron and would
appreciate any help/pointers as to what to look for/check when finding/
buying new pots to replace the old and from where to buy them.

I'd first try using a cleaner/lubricant. This is my favourite - Maplin
may sell it too.

http://www.solotechnic.co.uk/super-1...nt-i23588.html

Just cleaning can be a short term fix but they really need a suitable
lubricant in the longer term.

It should be easy to get electrically similar replacements, but the
larger older types can be difficult to match mechanically.

Also note 'preferred' values may have changed - so you'll probably have
to use a 47kohm where the original was 50kohm, etc.

47k x 11 is almost 50k

--
geoff