A very general question, when inject voltage and board draw over 4a and pull down 5v to 1v, but nothing is hot under thermal camera. Can I assume it is layer short? or it could be something very typical that I just have no idea of being a noob.
-
-
Check the CPU without a heatsink. -
CPU is not getting hot all, and CPU power supply is not shorted either... Have a few cases in the past that I can not find the short and I told myself it would be the board layers.....Comment
-
Hello,
Tell us more what board, where do you inject...
Maybe you inject directly to the ground...đComment
-
Hello, Just double check the board, and MON2 was right, the CPU is shorted, after taking thermal pad off the cpu ( forgot to take it off after the heatsink), CPU is shooting up over 50 while pull down the power. Thank you all for the help. Now I know I need to clean off the CPU when checking with thermal camera, so simple and so stupid I feel about myself.Comment
-
Hello,
Donât inject 5v anywhere, if the cpu was right now itâs really dead !
Generally you have to stay under 1v if you are not sure cpu/gpu/chipset mofset are not shortedâŚComment
-
Hello!
Recently I have a problem finding a dead short (as far as my cheap multimeter is concerned) on a multilayered (12 layer) PCB. It is caused due to mechanical stress (warping the board and, I assume, cracking inner layers). Injecting voltage of 0.9 V (operational voltage of that part of the circuit) and drawing 0.5 W doesn't cause any visible hotspot on a thermal camera.
Does anybody have any tips & tricks in order to locate the short more or less precisely? The area has a lot of powerplanes, so it's both blessing and a curse.
Silly idea no. 1: Can I... -
Hello all!
Recently I've got a broken Macbook Air M1 2020 A2337 of eBay with a broken screen and not turning on issue.
After some tinkering I've found C5201 capacitor to be blown. This is where I hit a wall since I am a total noob in this area and have no idea what else to look for. C5201 is on one line with 3 more capacitors which visually seem ok, but beep on continuity mode and also both sides of all capacitors beep when tested with ground from the board. This to me sounds like a short, but I am not able to find what component is before the capacitors to test it.... -
Hello dear Badcappers,
I came across a PS5 that was longscrewed. The screw went through the HDMI IC (which I replaced + repaired the traces it damaged), however the screw also bend the board and slightly cracked it on the other side. It still seems like it could be fixable though as the area might not have lots of traces going through it (fingers crossed).
Can somebody, please, measure their board and tell me if my assumption of an inner short between the via and ground layer is correct? These 3 pads have almost no resistance. I would like to make sure those are not some data...07-27-2024, 08:54 AM -
Hi Folks
I'm looking for a extreme high current short killer solution for a reasonable cost.
I have an LGA1700 motherboard (ASUS PRIME Z790-P WiFi) where I exchanged the LGA socket already 3 times, and every time after the socket exchange I get a short of power supply lines VCORE (V variable) and VCCIN_AUX (1.8V).
After taking off the socket, the shorts dissappear again.
The soldermask on the socket is already partially demaged from the heat, so I have reconstructed the soldermask by manually painting the missing soldermask parts with a very small top of a...10-15-2024, 10:13 AM -
i guess its the main power rails, as it has widests vias. i tried injecting voltage 1v and 1-5a but nothing is getting hot. resistance to gnd is about 0.002 or something like that(will update later). as its the main powerrail, do i raise the voltage to 19v and then inject 1-5amps? thx
Comment