Thanks for the info I'll start lookin for a repair shop and get some prices...

Yes mechanically the button works well, it clicks into place very smoothly and without any resistence, again however it does not, I guess, connect to ALL the contacts inside and leaves the amp in limbo until returned to the out position. THE Question now is, one, is the AMP itself totally worth the cost of possibly reparing it? And two, has anyone done this repair and what was the cost ??
All in All it is a beautiful amp but only half of it works!!??

Thanks for the reply !!! Button goes in and stays in so I know it works but I really do not hear a click ?? and as I mentioned the amp kinda goes dumb but only in that position. I will look for model numbers to try and get a clearer date of manufacture
Again Thanks

The channel button, Lead or Clean, only works in the OUT position which is clean channel, when pushed in amp kinda goes dumb no sounds at all.