no green/orange light on charger and it has 12.67V on PPBUS_G3H & 3.38V on PP3V42_G3H but not power on
Attached Files
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The 3v42 power rail should be 3v42.
Clean the MagSafe contacts with ipa (alcohol) using Q-tips to remove carbon build up, dirt, etc. Then test again. Use only the original power adapter. -
thank's for info
i did all the cleaning, using original charger but same result. but when i accidentally touch the screw hole on dc in board to metal parts on the motherboard, green light on charger turned on but won't power onComment
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Confirm the voltage to ground at L6995 = PP3V42_G3H (should be 3v42 here).
This flowchart should help:
https://logi.wiki/index.php/G3_to_S3..._and_BroadwellComment
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thank's for info, but the owner decided to take the unit before i start continue diagnose using those flowchart
for SMDFlea it wasn't thinked to me someone would asked what kind of board in question after seeing attached picture, but thank's for correcting itComment
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Hello everyone
Got a motorbike PCB that had 3 burned diodes.
The smaller ones have the marking PJ78 GS1M
And one larger one PJ78 GEX
Can someone help me identify them so I can be able to replace with same or equivalent?
Photos attached
Apreciate !
Thank you... -
My computer monitor ASUS VP249H stopped working, and smoke came out of it.
I opened it and found that a voltage regulator had burned out.
The problem is that I can't identify its reference.
I searched online for schematics or photos of similar boards that people are selling, but without success (no schematics, bad quality of the board or lack of the reference when it's a good quality 😅).
How can I find its reference, and do you think it's repairable?
Monitor: Asus VP249H
Board reference: 0171 - 2271 - 6083
Thanks
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Hi guys,
I wanted to test a DC adapter and I plugged it into my device and then I immediately smelled the cooked component. I cheked the adapter again and I discovered that it's not a DC but a 24V AC adapter
I took apart my tester and I think I found which component burned but I can't identify it for sure and I'm not sure where could i buy a replacement part which is the same or has similar features.
I attached a few pictures of the component. I think it's a voltage regulator but some of the markings on the component are burned.
Name of the... -
Hi,
I have a MSI Optix MPG27CQ screen to fix, only half screen is working, I found a burned chip on the right buffer board (S270DP01V00_HF_SR) but I can't read the model. Can anybody help?...04-08-2025, 05:53 AM -
received unit with no power at all, pluged bench PSU and not consuming any amperage, measurement shows that 19V only reaching first mosfet & gate voltage only 6V.
visual inspection found that it has burned chip, marking code wasn't too clear under microscope, i guess it's "A C C I". the chip is located under huge diode with UCQ1QA03 marking on it, since i don't find any schematic or boardview for this model, wandering that someone had similiar board and kindly measure what voltage comeout from the inductor connected to that chip or maybe knew what model number of the chip...
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