Hello everyone,
so, I have this laptop Dell Inspiron N5110 with a heating problem on both CPU (I7-2680qm) and GPU (GT 525m), I tried many solutions, like changing thermal paste every month, using thermal pads on CPU and GPU, even using thermal pads on CPU nearby coils; but nothing worked, just minutes after booting the laptop shuts itself down so I thought it might be a short problem, so I decided to check what's going on, so I went online and some tutorial (general one) said to check inductors in order to find the shorted circuit, after checking (CPU removed), I found the culprit to be PL4501 which is part of 1D05V_PWR net with PU4502 and PU4503 part of it too (they were shorted), so I removed the first mosfet and checked its rail and it was intact, so I removed the second one (PU4503) and just like its sister the rail didn't have any short but the inductor was still shorted, so I thought may be the short is on the other side of it, so I removed PL4501 and yes, only one side of if was shorted (the opposite side to PU4502 and PU4503) on that side there are 3 components PC4508, PTC4509 (don't exist on the PCB by default) and PT4502, but even when removed these capacitors were shorted, I read an old post where spleenharvester said that "1D05V_PWR appears to become 1D05V_VTT, see the same page of the schematic. Might be worth removing PR4505 to verify the short is not on that side, then remove components one by one", the problem is that even after removing PR4505 the short still exists.
The question is what's next? what should I do now?
so, I have this laptop Dell Inspiron N5110 with a heating problem on both CPU (I7-2680qm) and GPU (GT 525m), I tried many solutions, like changing thermal paste every month, using thermal pads on CPU and GPU, even using thermal pads on CPU nearby coils; but nothing worked, just minutes after booting the laptop shuts itself down so I thought it might be a short problem, so I decided to check what's going on, so I went online and some tutorial (general one) said to check inductors in order to find the shorted circuit, after checking (CPU removed), I found the culprit to be PL4501 which is part of 1D05V_PWR net with PU4502 and PU4503 part of it too (they were shorted), so I removed the first mosfet and checked its rail and it was intact, so I removed the second one (PU4503) and just like its sister the rail didn't have any short but the inductor was still shorted, so I thought may be the short is on the other side of it, so I removed PL4501 and yes, only one side of if was shorted (the opposite side to PU4502 and PU4503) on that side there are 3 components PC4508, PTC4509 (don't exist on the PCB by default) and PT4502, but even when removed these capacitors were shorted, I read an old post where spleenharvester said that "1D05V_PWR appears to become 1D05V_VTT, see the same page of the schematic. Might be worth removing PR4505 to verify the short is not on that side, then remove components one by one", the problem is that even after removing PR4505 the short still exists.
The question is what's next? what should I do now?
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