Hi, I have a SUB 12S+ that powers on (there's a blue light) but doesn't drive the speaker. It's been on standby mode for years and probably hasn't worked for
most of them.
As per ngen33r's first video:
the mosfets aren't shorted
the gate drive resistors read 100 ohms
voltage regulators read 26.3V
I read 5.6v between the output resistors
Q5 isn't surface mount, it looks like TO92 packaging
I don't see anything obviously discolored or bulging
I have a good soldering iron, a manual solder sucker, good sense about big caps and power rails, but very limited experience.
I don't mind wrecking the board learning something or having it repaired if there's a good place (or if your queue ever dies down, @ngen33r).
What would you recommend? Go after the caps, replace the glue, and re-test? Any suspicions of what died by keeping it in standby mode?