TimD's latest activity

True, but then again, a switch/breaker combo instead of fuses does have it's merits (as typically found on pro level amps).

Myself, I'd grab a voltmeter and start at the relay and work back towards the switch. Despite the obscurity on the schematic, that...

Hmmmm . . . You put the larger caps in with the WOPL stuff, right? You might check the main bridge rectifier to see if it has failed...

Sounds like latchup, but with your components, that's not supposed to be possible . . . .

I don't have it handy at the moment, but the procedure is in the service manual.

Thanks. I don't have silpads, but have plenty of grease and mica, so sticking with that . . . Hard to see a reason to change what's not...

Thanks . . . Thought I had covered that under "Changing out the transistors" (this unit, while working, has the SD555 (or close?)...

There is a service bulletin covering the changes to comp, but the change happened late enough that that is all that I think exists.

Competent technique does not lift traces . . . and only 4 caps to change. I work on stuff this ood (and older) routinely with zero...

Just wondering if anyone has done this prior *WITHOUT* changing out boards or backplane. It looks pretty trivial - the PL service...

If there are no diodes, and no short, the resistance will be very high, indicating that that channel is good. Thus, on those tests, the...

I'm still trying to figure out what test points he is reading across . . . reread as many times as I can, and I still never see it...

Absooutely anything that can provide an inverted signal to one channel and a non-inverted signal to the other can bridge an amp with a...

Build *just* U5B from the schematic - that's the actual line level inverter. The rest is a crossover, none of what you need to bridge an...

You can do it with an active inverter as well - no need for a transformer. Most amps that support bridging internally use a simple...