Pioneer SX-737 issues

[vortalexfan]

Originally Posted by Electronic M

Got an 8 ohm resistor or a pair of headphones you don't care about to try as a dummy load?

I do have some old headphones I don't care about that I can use for a dummy load, and I know where you're heading with this, which is to rebias the amp, which is precisely what the service manual for this thing says to do whenever transistors in the amplifier are replaced.

But the thing is, I've tried hooking a dummy load to the receiver and tried rebiasing the amp and when I tried to rebias the amplifer section according to the service manual I can't get the bias down to zero, the bias measures around 35 VDC on both the right and left channels and turning the adjustments makes no difference in the bias voltage.

Is there something I'm doing wrong?