stevem Messages: 4733 Registered: June 2004 Location: NY
Senior Member
Ok, the first thing your going to need is to get a hand held tube type solder sucker since your going to need such to get some Transistors and maybe resistors off of the output driver board ( PC 5065 ) on the floor of the amp.
Since you have a meter, set it to ohms .
On the driver board you will see 4 big 5 watt box type ciramic resistors next to each of the 4 output driver Transistors in there heat sinks.
These are very low ohms and should not check open, and many times when the output section has a problem like your amp one or more of these resistors ( called emitter resistors) will over heat and go open.
On the schematic you found in your amp these four are resistors r 23, r25, r33 and r35.
Please report back on your findings and we will move on.