Bad 53131A PSU

[tombi]

Hello,

I (perhaps mistakenly) bought a broken 53131A with a dead PSU. Seller said it had the oven option - it didn't. Seller said it hadn't been opened - the power supply board hadn't even been screwed back in and it rattled when it got to me.

Worse there are parts missing off the PSU.

It is one of the Delta SMP-43DL units (different to the ones I have seen here on the forum). Same as this one but stuffed if I am paying that for it.
http://www.ebay.com/itm/0950-2139-SMP-43DL-Power-Supply-T61610-/361530977124?hash=item542ceceb64

Anyway the tricky part is the main switching MOSFET is missing (it appears to have exploded).

The bulk capacitors seem to have been replaced with 47uF 250V units. 47uF seems too low and 250V is definitely too low (might have gotten away with that in the USA but not here in Australia).

Finally there is a zener diode ZD1 right near the switcher heat-sink that is gone.

It doesn't match the schematics for the 531XX PSU previously posted - it doesn't have the controller chip for starters.

Does anybody have one of these they could take a peak at for me? Or better a schematic.

Tom

[w9gb]

DELTA GROUP ELECTRONICS in Thailand was OEM Suppliers of this Switch-Mode Power Supply.
Model Number: DPS-43DL-2
https://www.deltathailand.com/en/
==
Radwell (PLC Center) in New Jersey have DELTA GROUP ELECTRONICS DPS-43DL-2 / DPS43DL2
(USED TESTED CLEANED) POWER SUPPLY “In Stock” (100/240V, 2 Amp, 47W, 50/60Hz).

eBay
https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F391748630351

Radwell Product Page (They offer a Repair Your Board Service)
https://www.radwell.com/en-US/Buy/DELTA%20GROUP%20ELECTRONICS/DELTA%20GROUP%20ELECTRONICS/DPS-43DL-2

Radwell International
1 Millennium Drive
Willingboro, NJ 08046
USA

[tombi]

Thanks for the tip

But  $300USD Ouch.

I figured it out in the end. I found a similar PSU for sale somewhere and the seller kindly read the number off the transistor (was a BUV48A).

I would like to replace the PSU board someday as it is pretty charred in places and I don't trust it. It is working again though. I just don't trust it enough to leave it on unattended.

Annoyingly it is easy to find 5v,+/-12V supplies but the extra -9V is a pain. Sure I could build something (and maybe I will).

Tom