Re: G5 Mac Power Supply Relay



I am following this ancient thread trying to troubleshoot an identical supply and have reached this step as the first place where the conclusions might be different.

Probing the outputs forwards, I get:

Yellow ~0.160
Red ~0.020
Orange ~0.104 after a longer delay

Probing the outputs in reverse, I get:

Yellow ~0.135
Red ~0.020
Orange ~0.109

Probing VDC on the cathode side of D2 shows a spike well over 300V. However the voltage here...