Channel switching board

Recentley my beloved Madamp A15Mk2 has developed a horrific hum that seems to be located in the cannelswitching circuit board. (The relay might have given in...)
Is it possible to buy this circuitboard/switch separately?

Hoping for a quick reply as this amp is needed for a recording session.

Zitat von eBernd;280545

Hi

therefore you might put this question via email directly to the musikding shop (because you want to purchase some special parts).

BTW: Hum might be caused by a lost GND-connection (dropped wire, especially the shield of signal cables within the amp...).

Bernd

Ok, I´ll do that in a minute