Does anyone have any experience isolating a short circuit (such as in a VRM) Using the Blue ESR/Low OHMs Meter?
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Hi all,
Recently picked up this GTX1650 at a local flea market for a low price and wanted to use it on my secondary PC. I first tested the card and saw the fan spin for a split second and then nothing. Immediately I thought of a short circuit. Disassembled and found a shorted SMD capacitor, injected voltage into it (1V/4A) and two Mosfets got hot immediately (QN3103 & QN3107). Desoldered these Mosfets and the card turned back to life.
Bought replacements from Aliexpress and replaced them afterwards. Tried the card but still the saw the fan spin for a split second... -
Hello everyone
Small technical problem on a Nintendo Switch lite
Here's what I noticed: the USB port has been damaged internally, with a short circuit on the power supply line to the small fuse.
After replacing the USB connector, the short circuit went away and I can't see any other short circuit in the whole motherboard.
When I charge the console, it seems to be charging: I get 15 volts and an amperage of 0.450 A.
Then, after a while, the amperage increases to 1.1 A and the BQ24193 charging chip starts to heat up, as evidenced... -
Hello. MSI B250 Gaming M3 board, short-circuit on the power supply. Found a problematic mosfet VQ1
(N-PK616BA_PDFN8-HF) soldered it out - short circuit is gone. I replaced VQ1 + VQ5 (N-PK632BA_PDFN8-HF). VQ1 was replaced with PK618. After starting attempt VQ1 is lit again. What can be the problem? In the driver?
Schematic and Boardview here
...04-04-2025, 03:57 PM -
Hello
two small ceramic capacitors with values 040. Can you tell me
whether they are half short circuit or full short circuit?
Thank you -
We have a XBOX 1914 controller that has shorted the 3V3 to J2 (aerial connector). If you unplug the aerial, the controller boots and connects. It seems stable without the aerial plugged in but it is not ideal.
The schematic is on https://www.acidmods.com/RDC/XB1/Sch...OME_VALUES.pdf
I have little to no understanding of these RF transmitters and so I am unsure what has failed. Currently, T2 is short on Pins 1 to 2 and RFF2 is also short on Pins 1 to 2. This is how the 3V3 is getting connected to J2, clearly one or both of these components are faulty....