Hello 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,...
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Topics: 101,433
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Welcome to our newest member, Jeremiah Patrick.
Latest Topics
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by FronczekToday, 04:18 AM
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by mecha1166I am working on a QN750Q8FNBFXZA. Dead except the standby light. It blinks what appears to be 1 3 1 2. 1 long blink, pause, 3 short, pause, 1 long, pause, 2 short, pause, repeat. A service manual would be very helpful, or if anyone knows these error codes. Thanks!Today, 08:31 AM
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by jikonikHello I have a nintendo switch HAD-CPU-10 and the component in the red circle is knocked... any help to identify it will be highly appreciated!1 Photo03-25-2024, 01:05 PM
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by iyan76Please fix this Bios.
I got +3VS5 and +5VS5 but Power and Battery LED won't turn on, board cannot switch on.
S/N# 5CD9194QW1...-
Channel: BIOS Requests ONLY!
Yesterday, 10:28 AM -
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by learnmoreHello Community,
As part of an ongoing learning project, I'm trying to perfrom a panel test (where, according to some, you jump 12v to the (Tcon) then jump 3.3V to panel test pin on the FPC connector). For the model I'm testing with, I'm unsure of where the test pin is located (providing there is one). So, I'm after some help to locate it. Here are some shots of the board (note mainboard, Tcon combo board)....03-16-2024, 10:41 AM -
by tehmatixThe controller starting when is powered and waiting for ON/OFF button command.
The ON/OFF button is made with an optoelectronic device which detect your finger, but is not responsive to anything.
Photos on next ...Today, 10:30 AM -
by tec3000Hi community! Germany calling I am wondering if you guys can help me out. I have an issue with my Sony LED TV. I've been told this is a good place to ask. Thanks for anyone who will reply and offer advice. Appreciated!
I have a KD-65X9005A Sony 4k LED TV. For a few weeks I've got this problem where I turn on the TV and within a few seconds the TV starts getting darker until it shuts itself off and I get the 4 blinking error code. HOWEVER there is one exception: Whenever I switch to the i-Manual, a full screen on-screen instruction manual, the TV never turns off. I tested for hours!...03-20-2024, 07:29 AM -
yesterday i bought this [ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"251","title":"corrossiom.png","width":"354","data-attachmentid":3238358}[/ATTACH]
I was not high on caffeine but the specs we nice-[LIST][*]Processor: AMD Ryzen 5 4600H 6 x 3 - 4 GHz, Renoir-H (Zen 2)[*]Graphics adapter: AMD Radeon RX Vega 6 (Ryzen 4000/5000)[*]Ram: 16gb DDR4[/LIST]so i bought it now i need schematics and help trouble shooting this all i saw is this burned cap idk what...03-19-2024, 05:00 AM -
by JohnWangI recently bought a hp workstation on marketplace. I think i got scamed. I ending up with a sample mechine? It has a QS CPU in it. But now there is a very annoying warning message every time I boot up
Is there anyway I can remove this? I see some forum post that mention about sssm.bat. But can anyone provide more detail about it?
Thanks
John
[ATTACH=JSON]{"alt":"Click image for larger version Name:\t5eaffde9f87f2cd3a7e7bc47d7d864e.jpg Views:\t0 Size:\t86.9 KB ID:\t3243471","data-align":"none","data-attachmentid":"...Yesterday, 08:42 PM -
by padlukeHello, I would like to ask if there is anyone here who could advise me if it makes sense to repair a motherboard damaged in this way. The damage occurred when the ntb was not turned off in the bag, where it got too hot. After cooling down, it wouldn't start. After removing the motherboard and connecting the adapter, the PQA01, PUI02 component burned, which is shown in the attached picture. PUA01 and PUV01 is very hot right now. Thanks a lot for any advice :-)
Padluke1 Photo03-03-2024, 08:54 AM
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by mecha1166I am working on a QN750Q8FNBFXZA. Dead except the standby light. It blinks what appears to be 1 3 1 2. 1 long blink, pause, 3 short, pause, 1 long, pause, 2 short, pause, repeat. A service manual would be very helpful, or if anyone knows these error codes. Thanks!Today, 08:31 AM
-
by tehmatixThe controller starting when is powered and waiting for ON/OFF button command.
The ON/OFF button is made with an optoelectronic device which detect your finger, but is not responsive to anything.
Photos on next ...Today, 10:30 AM -
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!Today, 04:18 AM -
by samstownHello,
I have this Hiopos Cash system running on android that stopped working without notice. The power supply is ok, there's light on motherboard but when pressing power button it doesn't turn on.
I've google for schematics but no luck. Motherboard is S2802_V1.3B. I've took some measure and maybe it could be a transistor, the one I am pointing on with the orange arrow on the pics. Does anyone knows this board ?
Thanks
Sam...Yesterday, 07:26 AM -
by pabloroggeriHello community
I need schemaic for Lenovo Ideacentre B320
motherboard: CIH61S V1.0
Thanks...-
Channel: BIOS & Schematic Requests!
Today, 07:48 AM -
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by bohabohaOn this set new LED strip. Backlight on but no image
have discovered very hot ic in red market in the picture plus some capacitor that are shorted on mainboard ,3v,5v,and 12v is in present want help deciding which is the bad boy...03-26-2024, 05:27 PM -
yesterday i bought this [ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"251","title":"corrossiom.png","width":"354","data-attachmentid":3238358}[/ATTACH]
I was not high on caffeine but the specs we nice-[LIST][*]Processor: AMD Ryzen 5 4600H 6 x 3 - 4 GHz, Renoir-H (Zen 2)[*]Graphics adapter: AMD Radeon RX Vega 6 (Ryzen 4000/5000)[*]Ram: 16gb DDR4[/LIST]so i bought it now i need schematics and help trouble shooting this all i saw is this burned cap idk what...03-19-2024, 05:00 AM -
by Egidio85hi, can anyone be kind enough to create the bios file for me? I attach the backup I read and the original bios downloaded from the Acer website
serial NHQ8KET00204410E333400
THANKS...-
Channel: BIOS Requests ONLY!
Today, 02:37 AM -
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by chth96I have an 21 inch CRT TV which is not able to power on.
I disassembled 21 inch CRT TV and measured voltage of main filter capacitor(Samhwa HC 400WV 220uF) in the circuit.
It shows 270V on my DMM.
So I discharged this main filter capactior completely and detached circuit board from cathode-ray tube.
Then I desoldered this main filter capacitor from circuit board.
But I noticed that this desoldered large capacitor(Samhwa HC 400WV 220uF) is slowly charged by itself until it reached 0.6V
I measured its ESR value with MESR-100 and it shows 0.1 ohm,judging...-
Channel: General Capacitor Questions & Issues
Today, 08:56 AM -
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by egelaptopHello, can someone help me clean the area of my original file?
820-3115-B
There was slj8c on the device. I wanted to say that I read that slj8e works on many devices, but I could not get an image. I want to try it with a region-cleared file....-
Channel: BIOS Requests ONLY!
Today, 04:35 AM -