Delta DPS-150TB repair

[@coloradowilderness3139]

Always wait for your excellent troubleshooting for PSU.
Thanks

[@electronicshaverightstolive]

Thank you for your support.
I will record some videos soon.

[@просто-в2с]

Такой же блок, не понятно что проверять на этом чипе, прозванивалку?

[@electronicshaverightstolive]

@@просто-в2с именно её)

[@orlypalomar]

Thanks for the video. Have the same PSU for a HP Microserver N40L... it's dead. The chip you replaced seems good on mine (0.5V on the diode test). There's also 340V across the bulk cap so I think the HV primary is ok. None of the transistors appear to be shorted. The DC outputs aren't shorted either. I haven't figured out what is wrong with it. Btw, is the green wire the power good signal? Doesl jumping it to ground turn on the PSU?

[@electronicshaverightstolive]

@@orlypalomar green wire is PS on wire. Jumping it to the ground should turn on the PS. If not check capacitors. They may be the reason.

[@matrixcrew]

This power supply (Delta DPS-150TB) is used in a HP ProLiant MicroServer N40L. These MicroServers are used as a home/office NAS.
The power supply in my server has just failed. So it might be a similar fix to get mine going again.

[@kaml966]

My power supply was also damaged.
IC901(TNY268P) seems to be fine, but I will replace it to be sure.
In my case, the R902 resistor was damaged (burned). Does anyone know what resistance it should have?
I couldn't find a schematic for this particular power supply.