My ATX FSP HEXA 500W was broken, lost 5vol stand by , ic TNY 277PN is broken, and R26, but i dont know what is R26. Help me...

Hey there guys. I've got a Corsair power supply that's come across my bench dead. I usually don't mess with power supplies, but it's a slow week so I'm giving it a whirl.

Taking it apart I heard a screw rattling around inside, and when I got it apart I found a couple blown components near what I think is the 5VSB area.

There's a 22ohm resistor that's melted and open, but it still has the bands.

The other part is a zener diode and it's top went to jesus, so I can't read the marking.

It looks like the diode connects the source and drain of a TNY284...

Hi,

I have a small number of monitors based on the above panel and am working through them. I have at least two with a single, burned-out diode. From what I can see it's something like DI428 or DII428 or DH428. Here's a picture of a working one.

Can anyone identify this please? Based on the number 428 it may be a shottky or a Zener according to Google. The device in question is D105.

ETA I can confirm that the number is definitely 428 (I took a video which revealed a better image), the DII appears to be a maker's mark. There's also a code 1G. Looking around...

I'm trying to find a replacement diode for one that has gone short.

I have a generic USB charger that went short circuit to ground on 5V. I found that one of a pair of identical diodes in parallel (and in series with transformer secondary winding) has gone short in both directions, so I suspect it's bad. The marking is CSRS1045, which I believe is a low barrier Schottky with max current 10A and max reverse 45V. I found a spec sheet for CSRS1045-A that has same specs and also says 350mV drop when forward biased.

I can't find the exact part number for sale. Similar...

I sent IPAD 7 WIFI-2019, model A2197 to a techincal service, but they did not repair it, so i am trying to fix it. The problem is the IPAD is not booting and no turn on.
This is what i found until this moment:
1) with battery connected, the current draw from the power supply is about 450mA from the charging port.
2) no short circuit in lines VCC_MAIN, VCC_BATT.
3) with the power supply, or with the battery, the 3.7V of VCC_MAIN and 1V8_ALWAYS are generated without problem.
4) the current draw from the power supply, without battery, is about 26mA from the charging...