Sb50 power supply

[Thephoneman]

Looking to replace this psu with something more reliable.  It's had a couple caps replaced but still isn't working right.  I've seen a couple of options but all will need some sort of rewiring. This is the psu that's mounted on the left side next to the hopper. Attached are a few pics for reference.

[Chris-socal]

There are markings on the side of the outer case. Try looking it up…those are available, you will pay for it, but….
The alternative is buying a 3-head output with equal or greater amps and re-wiring the connector to match. You will not find a low price equivalent that has the same header pattern.

Chris

[Thephoneman]

Thanks, I'll look into it

[Chris-socal]

You replaced all the caps? Also, the glass fuse is soldered in right next to the AC input, you verified it isn’t blown?
There will be a few zener diodes near the switching transistor (IRF831 or similar). You need to test all of them…and the transistor. When switching power supplies completely die they usually go out with great fanfare! That is why I always say it's best to recap and reflow them before they go out. They also use an IC on many of the more modern switch mode power supplies, those are known to go out. I don’t recognize that as a factory Sigma PS, is there any indication it was already changed?

Chris

[Thephoneman]

I haven't had a chance to personally look at the board yet.  Just getting some info on what way to go.