Hello,
My laptop's touchpad is not working. I have tried software, touchpad and touchpad fpc. I think the motherboard is faulty, can you share motherboard schematics or how can I fix the problem?
Model
X542UR-GQ272T
Part No
90NB0FE2-M03490
Part Desc
AS X542U 7500U/1DG5/12G/TU
Part Specification
X542UR-1BGQ/8SL/V/WAC/A08
Have a good day,...
No content found
Please log in to your account to view your subscribed posts.
| Directory | Topics | Posts | Last Post | |||
|---|---|---|---|---|---|---|
| Badcaps Capacitor & Electronics Repair Forum | ||||||
|
Frequently Asked Questions (No Posting)
All new members, PLEASE READ HERE FIRST! Posting only allowed by established members.
Topics: 45
Posts: 733
|
45 | 733 |
|
|||
|
Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
Topics: 234
Posts: 41,690
|
234 | 41,690 |
|
|||
| Document & Software Archive | ||||||
|
Common Parts Library - Datasheets
Share or download datasheets or application notes for electronic components and other parts. Contribute your knowledge or ask questions. Before using please read our Terms of Service.
Topics: 1
Posts: 3
Last Post:
ncp81208 datasheet
|
1 | 3 |
|
|||
| General Topics | ||||||
|
General Capacitor Questions & Issues
Questions and answers for identifying whether your device has bad capacitors. Also post general capacitor-related questions and issues here.
Topics: 3,183
Posts: 32,682
|
3,183 | 32,682 |
|
|||
|
General Computer & Tech Discussion
Have just a general computer question, post it here. This can be anything from an OS issue, hardware issue not related to capacitors, upgrade question, or whatever basic tech-related issue is on your mind.... This is also a good place to share your tech projects!
Topics: 4,493
Posts: 74,812
|
4,493 | 74,812 | ||||
| Troubleshooting Hardware & Devices and Electronics Theory | ||||||
|
General Electronics Technical Discussion
If you have a general question concerning basic electronics theory or component function & usage, here's where it goes.
Topics: 3,963
Posts: 44,280
|
3,963 | 44,280 |
|
|||
|
Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Technical discussions covering any type of desktop motherboard, video/graphics card, controller card, or whatever other desktop peripheral you need help with. 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!
Topics: 6,791
Posts: 37,196
Last Post:
issue Bios unlock Elite Tower 600 G9 PC
|
6,791 | 37,196 |
|
|||
|
Sub-Forums:
| ||||||
|
Troubleshooting & Designing Networks
Post your computer network questions, ideas, gripes, and so on in here. This can be any type of network, whether its cabled, wireless, or whatever. 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!
Topics: 500
Posts: 5,436
|
500 | 5,436 |
|
|||
|
Troubleshooting Laptops, Tablets, and Mobile Devices
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!
Topics: 31,772
Posts: 302,670
|
31,772 | 302,670 |
|
|||
|
Sub-Forums:
| ||||||
|
Troubleshooting Computer Displays
Technical discussions covering any type of PC/computer display, whether it be CRT, LCD, or anything else. 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!
Topics: 5,319
Posts: 75,676
Last Post:
Asus VG278 mosfet identification ?
|
5,319 | 75,676 |
|
|||
|
Troubleshooting TVs and Video Sources
Technical questions about your defective television, projection screen, LCD/plasma, or any other type of video device. 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!
Topics: 27,433
Posts: 374,481
Last Post:
Samsung UE55H8000SZ with TCON BN41-02112A
|
27,433 | 374,481 |
|
|||
|
Troubleshooting Power Supplies and Power Supply Design
Technical discussion for power supplies. This covers PC supplies, and any other related power supply issue. 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!
Topics: 4,178
Posts: 65,201
Last Post:
Corsair HX620W - dead APFC MOSFET
|
4,178 | 65,201 |
|
|||
|
Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices
Technical questions about your defective laser or ink printer, plotter, copier, scanner, and other imaging & printing devices. This section also includes digital cameras. 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!
Topics: 301
Posts: 1,664
Last Post:
NEED key for Epson WF-c5790
|
301 | 1,664 |
|
|||
|
Troubleshooting Audio Equipment
Technical discussion on audio equipment troubleshooting and installation. This can be anything from a home/car stereo, guitar amp, and so on. 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!
Topics: 2,317
Posts: 27,421
Last Post:
faulty loudspeaker amplifier-no sound output
|
2,317 | 27,421 |
|
|||
|
Troubleshooting Appliances and other Household Electronic Stuff
Technical discussion on household appliances & other household electrics & electronics; including troubleshooting and installation. This can be anything from a washer/dryer, dishwasher, microwave oven, other sordid kitchen electrics and so on. 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!
Topics: 223
Posts: 3,897
Last Post:
Saeco SG200E Coffee Machine
|
223 | 3,897 |
|
|||
|
Troubleshooting Game Consoles & Other Weird Devices
This can be anything from game consoles to arcade games to anything else that doesn't really fit into any of the above categories. 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!
Topics: 998
Posts: 10,860
Last Post:
Post your worthless and/or pointless repairs
|
998 | 10,860 |
|
|||
|
Equipment Usage, Soldering, Techniques, and Reviews
Technical discussions concerning soldering techniques, usage of test equipment, how it works, what's best, and some pointers in using it all.
Topics: 1,375
Posts: 19,368
|
1,375 | 19,368 |
|
|||
-
Yesterday, 03:40 AM
-
Hello,
My Asus monitor stop working today !! I found the problem on the main board, the power supply board is ok. It's Q9, a mosfet but I have no idea what are the specs since I don't have the schematic for that monitor !!
Can someone help me identified this mosfet ?
Thank you !04-16-2024, 01:15 PM -
"I heard that a blue LED has different voltage values than green and red ones. Green and red ones are easily replaceable, but how do I do that with the blue one?"
"I have to use the blue one, because green means fully charged and blue means charging."
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"20240415_172809.jpg","data-attachmentid":3253246}[/ATTACH]...04-15-2024, 09:59 AM -
Hi. Can any one help me with a schematic for Predator Helios 300 G3-571-77QK. Many thanks in advance.04-24-2024, 02:35 AM
-
Hi All,
I have been struggling to repair a HP 8460P laptop. Motherboard does not turn on. I have traced the problem to what seems to be a missing signal KBC_PWR_ON causing Trip2 on IC 5006 (TPS51123) to be activated.
The following components have been replaced but the problem remains.
C5191
C5192
U50006
Listed below are voltages appearing on U5006 when the Motherboard is supplied with power from a bench power supply for the first 15 seconds or so.
Pin 1 (Trip1) = 0.65
Pin 6 (Trip2) = 0.65
Pin 8 (Vreg3) = 3.31
Pin...04-24-2024, 10:16 PM -
Gooday
I have an Lenovo ThinkPad P15s gen2 that keeps giving me this error 2203
I have used the Lenovo Gold Key U1 Tool erased the eeprom and enter all the configs again but I still receive this error
I believe it to be an BIOS problem
I will Attach bios dump and some screen shots
Board number: HT4B0 /HP4B0 /HT5B1 /HT4B2 NM-D352 Rev2.0
SN: PF-3R33ZC
Type Number: 20W7-S2L700...Today, 02:32 AM -
Hi all,
I'm facing a issue... hope you could help me. I have a T-CON board BN41-02112A from Samsung 55inch Curve TV.
I have just only 2 status blue LEDs ON since LED3 is off. I have tried to test some test points but VON is NOT OK very close to 0V. Is there someone that can help me on the debugging the issue? I'm supplying the board from an external 12V voltage source.
Thank you in advance.
BR,
Michele
[ATTACH=JSON]{"data-align":"none","data-size":"full","data-attachmentid":3259938}[/ATTACH]...Yesterday, 12:37 PM -
Hi guys,
Need your help with clearing out BIOS Password.
Laptop model: TOSHIBA SATELLITE Radius 12 P20W-C-10D
P/N: PSPVVE-00300WTE
SN: YF069816S
Motherboard: H000095820
Thanks in advance!...Yesterday, 12:09 PM -
Hello, I have this Hp pavilion 1030 G1 that starts with a single light on caps lock then it turns off, measurements at the coils, meter in resistance mode (not continuity mode) are as follows: The problem started just after it fell from a desk to the ground. I can't find a boardview or a schematic diagram anywhere, please help me 🙏
1. 13k ohms
2. 0.00 ohms
3. 6.7 ohms
4. 8.9 ohms
5. 18.2 ohms
6. 83.5 ohms
7. 99.4 ohms
8. 10.7k ohms
9. 68.5 ohms
[URL=filedata/fetch?id=3260316&d=1714132446][ATTACH=JSON]{"alt":"Click...Today, 05:54 AM -
Hi! I have a TV, Samsung ue49ku6100kxxu, no boot, when connect the power cord, standby led and the backlight up and down repeated. When i disconnect the MB, the backlight is up.
I take some measurement and all ok. I have already try tape method and same happen, if I disconnect both flex from mainboard to panel tv same happened. This is a software error?
I have an IC programmer: CH341A
MB model: BN41-02528
MB code: BN41-02528A
on the glued label: BN94-10826KToday, 12:24 AM
-
Hello, I have this Hp pavilion 1030 G1 that starts with a single light on caps lock then it turns off, measurements at the coils, meter in resistance mode (not continuity mode) are as follows: The problem started just after it fell from a desk to the ground. I can't find a boardview or a schematic diagram anywhere, please help me 🙏
1. 13k ohms
2. 0.00 ohms
3. 6.7 ohms
4. 8.9 ohms
5. 18.2 ohms
6. 83.5 ohms
7. 99.4 ohms
8. 10.7k ohms
9. 68.5 ohms
[URL=filedata/fetch?id=3260316&d=1714132446][ATTACH=JSON]{"alt":"Click...Today, 05:54 AM -
Hi,
I'm trying to locate the Bios chip on my T495s 20QJ to recover the Bios.
The computer shut down during the bios update, now it's just singing. I want to try to reprogram it. I've read the BIOS guide but I'm still missing some information. I hope I'm asking in the right place.
Do you now which one of those chips is the BIOS ? And, are those compatible with the CH341A ?
Thanks a lot !Today, 05:27 AM -
Hello,
I have replaced the psu on this Toshiba 42HL196 twice. I have no HDMI or tuner. The component and composite inputs work though. I had a spare seine but it just gives me 3 red blinks so it's either a faulty seine or needs programming. It would seem it's the seine board. Ideas?Today, 01:34 AM -
Hello everybody I need to clean ME region in this bios or new clean bios for this motherboard...Yesterday, 11:49 PM
-
-
Gooday
I have an Lenovo ThinkPad P15s gen2 that keeps giving me this error 2203
I have used the Lenovo Gold Key U1 Tool erased the eeprom and enter all the configs again but I still receive this error
I believe it to be an BIOS problem
I will Attach bios dump and some screen shots
Board number: HT4B0 /HP4B0 /HT5B1 /HT4B2 NM-D352 Rev2.0
SN: PF-3R33ZC
Type Number: 20W7-S2L700...Today, 02:32 AM -
A2442 hinge sensor has liquid damage, not possible to repair, is there any alternate?...Today, 03:26 AM
-
Hi! I have a TV, Samsung ue49ku6100kxxu, no boot, when connect the power cord, standby led and the backlight up and down repeated. When i disconnect the MB, the backlight is up.
I take some measurement and all ok. I have already try tape method and same happen, if I disconnect both flex from mainboard to panel tv same happened. This is a software error?
I have an IC programmer: CH341A
MB model: BN41-02528
MB code: BN41-02528A
on the glued label: BN94-10826KToday, 12:24 AM -
Hi all,
I'm facing a issue... hope you could help me. I have a T-CON board BN41-02112A from Samsung 55inch Curve TV.
I have just only 2 status blue LEDs ON since LED3 is off. I have tried to test some test points but VON is NOT OK very close to 0V. Is there someone that can help me on the debugging the issue? I'm supplying the board from an external 12V voltage source.
Thank you in advance.
BR,
Michele
[ATTACH=JSON]{"data-align":"none","data-size":"full","data-attachmentid":3259938}[/ATTACH]...Yesterday, 12:37 PM -
Hi 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