Electronics Repair

Repairing a powered monitor

I tested removing the glue? From one of the 16 points where the circuit board was attached via plastic standoffs. I didn’t like the reversibility of the operation and chose not to pull the board off.
Tough to see where to aim the contact cleaner
…Unless you have a boroscope to see in tight places.
Oh that’s nice – there’s some good-sized windows in the sides of these potentiometers. I’ll just squirt cleaner there and we should be good to go.
I took out more screws than I needed to since I found I didn’t want to pull the board out
I wondered if the specs about balanced input were true – and yes it’s a TRS jack. Labeled the terminals for convenience
Checked resistance on all three pins of the connector to make sure values were reasonable and not just making continuity