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?

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