I've noticed in troubleshooting my CS-800 power amp that I'm going through triacs. There are other intermittent issues that could also be the root (not so good connections from the 4 pin power amp board differential plug) and I've seen rail voltage at the speaker terminals at times and not at others... having trouble tracking it down.
But the question for this thread:
Can the DC offset that occurs without a speaker load to absorb it cause the triacs (and OT) to fail? By DC offset, I mean, turn on gives 20VDC for a second and turn off also produces this as the caps discharge. It takes a minute to completely drain without a load. If I have a speaker connected, it's just a thud and the speaker load soaks up the voltage instantaneously.
I'm just trying to figure out why the triacs are so short lived. I have been troubleshooting at times without a speaker connected and wonder if this DC is being picked up and the output crowbarred on startup.
But the question for this thread:
Can the DC offset that occurs without a speaker load to absorb it cause the triacs (and OT) to fail? By DC offset, I mean, turn on gives 20VDC for a second and turn off also produces this as the caps discharge. It takes a minute to completely drain without a load. If I have a speaker connected, it's just a thud and the speaker load soaks up the voltage instantaneously.
I'm just trying to figure out why the triacs are so short lived. I have been troubleshooting at times without a speaker connected and wonder if this DC is being picked up and the output crowbarred on startup.