Lenovo cg410/cg510 nm-a681 motherboard no power on.
It pu200 ic burn - now 3.3v area short, heating processor
how to fix this error
It pu200 ic burn - now 3.3v area short, heating processor
how to fix this error
Attached Files
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Re: Lenovo cg410/cg510 nm-a681 3.3v area short
Well, I would start by cleaning with caution. You have a short to the graphic card. So then you have to work with the team diagram. Review integrated and see if they are short, they are not always the problem, measure resistances according to the schematic. The unfortunate thing would be that the graphic is damaged. -
Re: Lenovo cg410/cg510 nm-a681 3.3v area short
There you have the schematic.
https://www.badcaps.net/forum/attach...5&d=1507829541Comment
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Re: Lenovo cg410/cg510 nm-a681 3.3v area short
I'm removed core coil but same error. M/B Have a NVIDIA DEDICATED graphic.
Can you show the error area diagram?Comment
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Re: Lenovo cg410/cg510 nm-a681 3.3v area short
Yes, well it comes with two graphics chips one is the nvidia and the other is the integrated CPU. What you should check are the connection rails to the CPU to be discarding components. In the picture an IC is damaged, but I can not see its number. Send a better picture or the position number of the components that you see in damage!Comment
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Re: Lenovo cg410/cg510 nm-a681 3.3v area short
Dead PCH.OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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Re: Lenovo cg410/cg510 nm-a681 3.3v area short
Yes indeed pch is gone but i doubt the pins are not separated properly on the burnt side of ic. It appears so from the pic. If ground is in contact with other nearby pins of IC-that can be the reason of high consumption shown in bench psu. So re check once the burnt pins with schematic.Comment
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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 check PPBUS_AON and there is a short present on the line, the computer shows a short when testing for short to ground, so when I inject voltage into the line, I get 0AMPS so no short is showing up. I have replaced a blown cap on this board that exploded and tested for the short and it is now removed. Any suggestions? I tested voltage at the line when the fuses are connected and I am getting 1.2 Volts at the line.
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Hello friends and welcome back,sorry for my English but I'm in Italy and I'm using a google to translate
Main board CG410/CG510 NM-A681 rev 1.0
I have this Lenovo laptop under repair with strange behavior, no display at first I thought it has a corrupt bios but now after disassembling it I have doubts, the laptop turns on automatically after inserting the charger without pressing the power button, If I hold down the power button for 8 seconds, it turns off for 1 second but turns on immediately after 1 second, so you can't even turn it off, tested with and without RAM,... -
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