I dont know if anyone else will know what is going on... but...

Ive got a Sansui RZ-5000 that will not operate all 4 channels at once... only A channels or B channels at one time...

In addition there is no signal ground for one of the A channels... (while there is signal on the +ve terminal, reference ground (-ve) isnt there)

Anyone got any bright ideas on what is wrong... ?

 

did it ever play both channles at once? my receiver will play both channles at once but each channle gets only half the power.

 

yeaknow Im not really sure... it's a 2channel amp so maybe you are only supposed to be able to switch between speaker system A and B... (and not be able to run both at once)