Quote:
Originally Posted by GW4FRX
Stock faults on RA177x PSUs seem to be dry joints on the pass devices and also the large rectifier on the PCB. If the +12V regulator fails the other rails collapse, which can be confusing, so a good strategy is to make sure that one is working before addressing the others.
Changing the four reservoir capacitors, rewiring the PSU harness in PTFE cable and adding fan cooling to the rear heatsink always seems to be a good move with an RA177x if you're planning to keep it.
I didn't know that Telford Electronics ever serviced these but there are plenty of people around with a lot of experience in fixing them.
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GW4FRX, thanks for that reply. Telford will look at my set, but I am in East Anglia and they are in... Telford. Long way to travel... isn't there anyone closer
