The relays engage separately on startup. The amp works but blows subtly after a week or two of use. It will be working when I shut it down and next time I go to use it. It's dead. I'm wondering if this relay thing is part of the issue.
Has it ever seemed to have intermittent problems on the bench?
If/when you get it working again, I'd suggest pushing on the driver board in various directions while the amp was on to see if there was ever a change in current draw.
You may also try heating and cooling the driver board to see if that changes the current draw.
If/when you get it working again, I'd suggest pushing on the driver board in various directions while the amp was on to see if there was ever a change in current draw.
You may also try heating and cooling the driver board to see if that changes the current draw.