QED A230SC - One chanel down!

[amd500]

I have a very old QED Stereo Amplifier - A230S, unfortunately only working on one chanel. The internal fuses ar OK. Any ideas on what the problem may be?
Thanks.

 

[neiljadman]

That's a very vague description, since it could be almost anything. Are you able to separate the pre and power amp sections to see if the fault lies in either region?

 

[Puffin]

Does this amp use Darlington output devices ?