Doing a couple measurements on my Amp4 that has the overload light on. This is an improvement from having all three on!
I'm measuring voltages at as many points as I can. It's hard to say what they should be, but I have roughly rail voltage on the IN1A/1B/2A/2B into the TP2050 (fine pitch) chip.
The OAOUT and INV inputs to the TC2000 chip seem acceptable.
OVERLDB is, of course, high at ~5V.
I've noticed that periodically I'll measure lower voltages on channel 1 and it behaves normally at the outputs. Channel 2 never has worked normally on this unit.
Can anyone help me out?