Hey guys, bit stumped with this laptop after replacing 2 blown components i.e., MP86493, MP2979A.
To begin with, this laptop was dead-dead.
Now with replaced (visibly) blown components, i do get some progress; after connecting battery or main cable;[LIST][*]am getting white power led[*]5-long-flashes on CAPS Lock and NUM lock[*]then, fan full speed[*]CPU heats up some (smaller die PCH, does not)[*]always constant black screen no matter what's tried[*]no USB recognition[*]no HDMI output[/LIST]this is as far as I can get with it and not sure where to inspect next ?
...
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by bohabohaI'm thinking of buying some single smd led diode for tv repair to have under hand there is so many, 2835 k-6000k 9v.6v, 3v white etc but don't know which to have if you advise me which Should I buy and which is most usual and bäst to have under hand. thank youYesterday, 02:00 PM
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by angel-boyhy, i have a PC M70Q - 11E8, that is dead, no power led, no logo led , change the CPU, still dead !
- pc is like new but with OS amazon.Gringotts2, i try to program bios 16mb, nothing, i change the 16mb W25Q128 with other, write another dump file, still no power up, replace again W25Q128 with other and write another dump file, still DEAD
- i have 3v3, 5v, 1v and others voltage. power botton drops to 0 and back 3v3.
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by FronczekHello people,
I've got this laptop not working for repairs, and as you can see something was done to it as you can see in the coils PL58XX (which I for some reason cannot find in the schematics...) The first FET (PQ201) was not an original part and a questionable one at that and the second one (PQ202) was shorted. Both are N-channel. Ordered replacements for them and replaced them after arrival. Now I have encountered another problem: there is no power at the second FET. By following the thread linked I got to the injection part. Applied 0.8V at 1.5A, but couldn't feel anything getting hot,...Technical discussions covering any type of laptop, notebook, netbook, tablet, or smartphone. Any and all brands and models welcome. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!Yesterday, 04:18 AM -
by repairplus[B]I need BIOS + EC. Please help
-----------------------------------------------------
MODEL: HP Elite x360 1040 G9 2-in-1
-------------------------------------------------------
PCB Ver
----------------------------------------------
POWDERKE-PV-G3M[/B]
6050A3316601-MB-AX4
2021-11-17
----------------------------------------------
SPEC
CPU: 12TH Gen I7-1265U
RAM 16GB
SSD: 256GB
-----------------------------------------------
Thank you.[B]I need BIOS + EC. Please help
------------------------------------------------------
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by pabloroggeriHello community
I need schemaic for Lenovo Ideacentre B320
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by paskelovanisHello,
Fan spinning normally, power LED turns on and goes off almost instantly, computer remains on, has no internal/external display output.
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Make: Z2401CGT
Motherboard: Z240IC REV 1.4
BIOS dump attached....-
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by smic717394Hi guys, I need a bit of help, I have a Asus Zenbook with motherboard UX533FD Rev 2.1. Connecting the laptop draws 30mah and not coming on, Measuring the coils I got the values below. Measuring in resistance all coils have normal values, cpu about 8ohm and the gpu about 5ohm but I guess its normal. Checking with the thermal camera, the only 2 chips that have a bit of heat signature are the U3501 (pd controller) and the U3001 that is the KBC. Now I guess the PD controller it's not the the problem because the battery is fully charged and trying to turn on on battery is the same.
Just...Today, 06:59 AM -
by GcnewbieForgive me this is my first request for help on this forum, so if i've screwed up or not followed the rules i should have i apologise profusely.
I have a Dell Latitude 5570 that was randomly shutting down, on further investigation i found that the machine had been shutting down due to thermal events as noted by windows event viewer.
My investigations lead me to the dell diagnostics screen, where i found that there were two sensors out of range which had been causing the shutdowns, one of which was the GPU thermal sensor and the other the ambient sensor.
I opened the...Today, 06:55 AM
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by repairplus[B]I need BIOS + EC. Please help
-----------------------------------------------------
MODEL: HP Elite x360 1040 G9 2-in-1
-------------------------------------------------------
PCB Ver
----------------------------------------------
POWDERKE-PV-G3M[/B]
6050A3316601-MB-AX4
2021-11-17
----------------------------------------------
SPEC
CPU: 12TH Gen I7-1265U
RAM 16GB
SSD: 256GB
-----------------------------------------------
Thank you.[B]I need BIOS + EC. Please help
------------------------------------------------------
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by CannyHi , im looking for this bios file
213026-1 odin 13 l tgl y5f8xsja-
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by reassorThere is 2 sia ics and in 1 section where u see dots on the coils i have 2.2ohm there and there is no voltage on them at all.
Also i read in other topić how psu works on these tvs and when u pług it in there is constant 40w draw from wall. When I unplug display from tcon it drops 10w when I unplug tcon it drops another 10w (unplug done w/o power).
I'm mostly sure its main board cpu cause no sygnał to turn on 24 volt for panel and its constant draw.
For now I'm just curios about these w coils . Could not find any datasheet for ic thats the lines go...1 PhotoYesterday, 11:06 PM -
by paskelovanisHello,
Fan spinning normally, power LED turns on and goes off almost instantly, computer remains on, has no internal/external display output.
S/N: G7PTTSIR000W
Model: ZN240IC
Make: Z2401CGT
Motherboard: Z240IC REV 1.4
BIOS dump attached....-
Channel: BIOS & Schematic Requests!
Today, 05:05 AM -
-
by sammus540I have a Vostro 3420 8H8K5R3-8FC8 that freeze at any attempt to enter bios password or the recovery master password received from dell. I do not have a clean BIOS image to flash.
And as luck would have it happened a couple of months ago right outside of the warranty period (Dec 2023) warranty expired in September. Any help or guidance is appreciated.-
Channel: BIOS Requests ONLY!
Yesterday, 06:33 PM -
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by bohabohaI'm thinking of buying some single smd led diode for tv repair to have under hand there is so many, 2835 k-6000k 9v.6v, 3v white etc but don't know which to have if you advise me which Should I buy and which is most usual and bäst to have under hand. thank youYesterday, 02:00 PM
-
by angel-boyhy, i have a PC M70Q - 11E8, that is dead, no power led, no logo led , change the CPU, still dead !
- pc is like new but with OS amazon.Gringotts2, i try to program bios 16mb, nothing, i change the 16mb W25Q128 with other, write another dump file, still no power up, replace again W25Q128 with other and write another dump file, still DEAD
- i have 3v3, 5v, 1v and others voltage. power botton drops to 0 and back 3v3.
my question , is possbile this pc will not power up becouse is locked ? maybe need a lan wake up , i dont know.Today, 07:21 AM -
by smic717394Hi guys, I need a bit of help, I have a Asus Zenbook with motherboard UX533FD Rev 2.1. Connecting the laptop draws 30mah and not coming on, Measuring the coils I got the values below. Measuring in resistance all coils have normal values, cpu about 8ohm and the gpu about 5ohm but I guess its normal. Checking with the thermal camera, the only 2 chips that have a bit of heat signature are the U3501 (pd controller) and the U3001 that is the KBC. Now I guess the PD controller it's not the the problem because the battery is fully charged and trying to turn on on battery is the same.
Just...Today, 06:59 AM -
by GcnewbieForgive me this is my first request for help on this forum, so if i've screwed up or not followed the rules i should have i apologise profusely.
I have a Dell Latitude 5570 that was randomly shutting down, on further investigation i found that the machine had been shutting down due to thermal events as noted by windows event viewer.
My investigations lead me to the dell diagnostics screen, where i found that there were two sensors out of range which had been causing the shutdowns, one of which was the GPU thermal sensor and the other the ambient sensor.
I opened the...Today, 06:55 AM