Hello you helpful bunch.
I have a dead PSU (try to guess from the image what device it came from?
) I disassembled it, basically 3 PCB's, a fan and an IEC AC filter thingie
I don't believe there is a circuit diagram for this PSU.
Now its not the beginners section but I'm a beginner and so I'm not going to be plugging this in to mains, in saying that, I do have access to a jaycar variac, rigol oscilloscope and micsig differential probes.
I read somewhere standard SMPS troubleshooting order applies: input, fuse, varistor, rect. bridge, capacitor, switchers, PWM, transformer, then secondary semiconductors, feedback circuit and output filtering, does that make sense, can somebody elaborate on that?
I see two riser PCBs with semiconductors on them.
The only issue I can see is at the red X, a power resistor maybe, the outer casing has come off at the top?
The fuses look OK.
Really just looking for SMPS advice, tips, tricks.
I have heard that the electrolytic capacitors go bad on them, I have 3 of these PSU's, 2 dead (one of them produced the magic smoke), 1 alive.
Thanks for looking.
Richard