Hello experts,
Can anyone educate me on how to test MBR3045CT and SR3045LCT Schottky diodes? I'm totally a newbie in electronics, so forgive me if I have cheap tools. In my effort to repair a Gigabyte PSU, I stumbled upon the two diodes, which I suspect are leaky. I tested this with my two cheap multimeters and the newly bought LCR-T4 MC328, and I got confusing results. Below are my test results.

Aneng ST182 Meter.

Diode mode.
MBR3045CT:
Diode mode
Pin 2-1 - 0.150v
Pin 2-3 - 0.150v ...

Hi there, i am currently diagnosing my corsair rm750 that wont turn on, after a power trip.

Before the power trip, previously i need to push power button on my pc case quite a bit in order to turn the pc (and power supply on), however after the power trip now i cannot turn the pc on at all and i opened the power supply, and found out some of the component(s) are blown. (picture attached)

My current diagnostic is that the (schottky) diode marked "SF" in the 5Vsb circuit are blown and possibly the ES1DF diode too.

Can anyone help me identify the component...

Hello all!

could someone help identifying this ST diode?

Marking EUV C730

Photo attached,

Thanks in advance!...

This diode is mounted on a Frigidaire electronic oven control PN:316131600. This diode runs hot enough that the PCB is showing slight burn marks (black soot looking area on PCB above the diode). It looks to me to be coming from the body of the diode.

The oven control is 22 years old and still works, but I can't get a new replacement, so I'm doing preventative maintenance and replacing a few parts on it that I think could fail - and this is one of them.

Can any of you identify this diode (see pic) and suggest a replacement that can handle more heat - or if not, can...

Hi there all.

Troubleshooting an SMPS and I’ve found a SMD diode shorted in both directions. The trouble is it has no identification on it. So what do I replace it with and how do I tell where the anode and cathode is and how to mount the replacement?

It is diode D1 on the image.

Regards.

Gareth....