Re: trying to fix a 6V 0.5A T1 (Transformer) AD050120T2 power supply

The most common failure points on those power supplies, are failing/failed electrolytic capacitors. If the unit has been in use for a long time, like you say, and there was nothing else that would have caused it to fail, like a power surge of some type, I would check each one of those caps out of circuit. You said you tested one out of circuit and got an ESR Reading, so I am guessing you have an ESR Meter of some type. Have you tested the others in circuit with that meter? In-circuit testing of e-caps for farad...

Re: New Members - please post your introductions here

Name is Hal. New to this forum. Dabble in electronics repair as a hobby. Seems I'm always finding another project to troubleshoot. Sometimes I win, sometimes I don't, but at least I try. Learning something new is what drives me, even though I'm not (new).