How to check relays in a preamp?

I think I may have faulty one in my preamp.


Input, output? A relay is just a switch in what way it is faulty?

Better check with a technician as to measure coil voltage, resistance, continuity.

It can be anything from oxidation, a bad transistor, bad cap, bad diode, bad joint.

Relays are cheap (labour is not) if you want to replace but inspect all other things first.


@ptss ​​​​​​, why to check all relays, only the areas with an issue.

I would not know about cost and how many hrs your unit stays on working bench.