[Mark Zacharias]

"Jack" wrote in message ...
Jack wrote:
After a week of playing with no problems, the right channel went out. It
was the left channel previously. I was dismayed until I remembered that,
when I reseated the output trannies, I switch them, left for right. I
was further heartened when that same trick of switching off the speakers
and turning the volume up to max brought the sound back. Since there are
a pair of outputs in each channel, switching one of them again and
waiting to see which channel goes out next should tell me which tranny
is bad.

After switching back one pair of the output transistors, the PNP's, NEC
B539A's, the problem stayed in the right channel, so I replaced the
right channel NPN, an NEC D287A with an NTE284. It's playing fine at the
moment. I will button it up and consider it fixed until it tells me it
isn't.

Jack


If you have not cleaned the relay contacts yet - you are wasting your time.

Mark Z.