Tim Schwartz wrote in message
...
N Cook wrote:
On 1993 Arcam Delta 290 amp, for R/C use and also manual front panel
knob.
Before I take the whole amp apart to remove it.
Poor switch contacts. Has anyone taken one apart to renovate or even
just
clean them, any hidden traps? odd springs, awkward indexing or anything?

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/


Nigel,

I've worked on many of these. The switches don't come apart easily,
and often get damaged just removing them from the board, which you would
have to do to take one apart. My experience is that they don't hold up
for more than a few months if you spray them out. You can put some
contact cleaner or lubricant on the new switch if you like, and that may
help it last longer than the original one.

Arcam still has them in stock, part number A1207. E-mail them at
.

Regards,
Tim Schwartz
Bristol Electronics


But any specific hidden hazards beyond taking any switch or pot apart ?
As its an otherwise unpopulated area of board I intend hot-air gunning it
off.
Also intend taking apart to renovate, presumably cleaning off CuS corrosion
going by other parts in the amp, rather than happy-squirting and original
part replacement would be a back-stop.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/