Need Help With PSU Winsun WS200-3EAC-247

[SoporteHR]

Good morning everyone, receive a cordial greeting.

I have a brand power source: Winsun Model WS200-3EAC-247
PCB2003EACMAB-V12

This source has multiple voltage outputs. Dual 24vdc sources operate well.

But the session of the power source that delivers 24vdc, 40vdc, 5vdc. it does not work.

When reviewing it, 2IC1 exploded, only the last digits of the code are observed, 44N, I think it is a UC3844N

I must locate the value of several resistors that are burned out and cannot color read and others open.

The Mosfet is short.

The other 1IC1 is different. UC3845B this corresponds to the font that is working fine.

So I can't use that operating session as a reference. (They are different)

I ask you if you have the service diagram of this source, I already looked in the forum and on the internet and I did not get it.

I look forward to your valuable comments.

Thank you very much.

Happy day

[SoporteHR]

Re: Need Help With PSU Winsun WS200-3EAC-247

Hi all.

Although I had no answer on this query, I finally managed to repair this power source.

The 2IC1 integrated circuit that exploded is the model. UC3844.

The rest of the components were easy to identify using the datasheet of the integrated and the operational session of the 24vdc source as reference.

Once switched on I got the output of the session repaired. 11.98vdc and 37.6vdc respectively.

Case closed.

Greetings to all.

[stj]

Re: Need Help With PSU Winsun WS200-3EAC-247

i was going to say that there is probably an example schematic in the datasheet.