tomodachi
Badcaps Veteran
Last Activity: 07-15-2026, 12:36 AM
Joined: 04-03-2012
Location: Istanbul
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Check PQ0204 it can be shorted, what is the voltage on PL0202 when charger attached ? if you see around 20v then your PQ0204 dual mosfet is toasted... -
Today a customer brought in same model with sometimes not starting / booting issue. Diagnosed with cold solder joint under CPU and reballed it, now the board is always starting but not posting
Damn low temperature soldering on late Lenovo models making them hard to fixLeave a comment:
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reball cpu and memory chips...Leave a comment:
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Great explanation, thanks !...Leave a comment:
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if you have two of these units and one of them is working, try swapping pd firmware chip (u184)...Leave a comment:
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Thank you very much...Leave a comment:
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Thank you very much !...Leave a comment:
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Thank you very much I will...Leave a comment:
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I know how to use Intel FIT but sometimes I can't find compatible ME firmware...Leave a comment:
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Thank you hoaca388, this worked on my not powering on motherboard....Leave a comment:
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it was brand new...Leave a comment:
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Hello, need clean me after PCH replacement, here is my original dump
NM-C911
SN: pf2l7gg1
Thanks in advance !...Leave a comment:
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Update
Fixed this with CPU replacementLeave a comment:
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Thank you very much but boardview isn't helpful with my case
...
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Update and help request
Since my last post in this topic, I have saved many motherboards with this malfunction in this device by reballing the CPU. Now I need your help because the motherboard I am currently reballing does not see the SSD and M2 disk after the process. I think this is due to some smd resistors accidentally lost during reballing but I don't have a high resolution image to compare with. If anyone has this motherboard, can they share a high resolution picture of the CPU and its surroundings?Leave a comment:
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Hi hoaca388,
This BIOS is working, but as soon as I enter ST, save and exit BIOS image on EC gets corrupted and laptop won't turn on again.
What might be the problem ?...Leave a comment:
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Thanks a lot it helped, except service tag can not be saved
Uploading my ec and main backup. EC side is corrupted and not powering on, is it possible to repair it ?
service tag : JF6C0B3
MB : Mockingbird-L CML UMA 6L
thanks in advance !...Last edited by tomodachi; 10-31-2025, 01:24 AM.Leave a comment:
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Here is a working backup ( not me clean) from a working machine in case someone needs it...Leave a comment:
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Can't post sn due to reasons but machine type is 8PZ98AV and official site BIOS file attached...Leave a comment:
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Hi
Does anyone have fresh unlocked version ? Can't share backup since original is already destroyed both ec and mainLeave a comment:
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