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Badcaps Capacitor & Electronics Repair Forum
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All new members, PLEASE READ HERE FIRST! Posting only allowed by established members.
Topics: 46 Posts: 735
46 735
Thermaltake
Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
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239 50,606
Document & Software Archive
Schematics and Boardviews
Share or download schematics and boardview files. Contribute your knowledge or ask questions. Before using please read our Terms of Service.
Topics: 2,160 Posts: 2,567
2,160 2,567
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: 59 Posts: 69
59 69
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: 3,260 Posts: 33,218
3,260 33,218
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: 4,585 Posts: 75,481
4,585 75,481
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: 4,274 Posts: 47,070
4,274 47,070
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: 7,882 Posts: 44,462
7,882 44,462
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: 532 Posts: 5,642
532 5,642
dahm
by dahm
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: 36,959 Posts: 379,119
Last Post:
36,959 379,119
zhaoriwei1103
Sub-Forums:
BIOS Requests ONLY! (14,639/206,673)
Schematic Requests ONLY! (5,602/33,386)
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: 5,438 Posts: 76,403
5,438 76,403
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: 28,137 Posts: 384,119
Last Post: TCL55p615 problem
28,137 384,119
tiki66
by tiki66
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: 4,331 Posts: 66,593
4,331 66,593
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: 355 Posts: 1,880
355 1,880
DumpCraft
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: 2,518 Posts: 28,779
2,518 28,779
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: 316 Posts: 4,889
316 4,889
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: 1,171 Posts: 12,070
1,171 12,070
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: 1,417 Posts: 19,882
1,417 19,882
Specifications
Laptop, Tablet, & Notebook Specifications
Basic specifications for laptops, tablets, & notebooks. We are constantly adding new content like boardviews, schematics, fixes, and other data here.
Topics: 101,079 Posts: 101,091
101,079 101,091
Server, iMac, & Desktop PC Specifications
Basic specifications for server, iMac, & desktop computers. We are constantly adding new content like boardviews, schematics, fixes, and other data here.
Topics: 8,712 Posts: 8,720
8,712 8,720

What's Going On?

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There are currently 649332 users online. 5233 members and 644099 guests.

Most users ever online was 1,342,976 at 10:51 PM on 04-26-2024.

Badcaps Statistics

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Topics: 220,836   Posts: 1,485,215   Members: 583,139   Active Members: 22,851
Welcome to our newest member, Andrew McAllister.

Latest Topics

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  • Term1903
    TCL55p615 problem
    by Term1903
    Hello Everyone

    I hope you are all well..


    I have problem with my TCL 55p615 tv

    two months after warranty expires, tv started freezing while watching sat tv ,youtube video or movies from usb​, only after 2 minutes,
    but interestingly, tv working good with external source, such as an apple tv connected over hdmi port, I can watch any 4k movies any 4k videos from youtube without any problem ,
    but on its own android interface it is freezing(both video audio and also menu freezing) only in two minutes,
    when freezed ,only thing I can do...
    Yesterday, 08:47 AM
  • gabrielA7
    Zotac GTX 1080 8GB / No video / Error reported on all memory modules!
    by gabrielA7
    Hi guys!!

    I have this video card on my bench, it turns on and the screen goes black!

    I used MATS but it showed an error in all memory modules, when writing!

    I once got a 1060 with the same symptom, all modules were defective, I rebaled the GPU and it stayed the same.

    Remember that I have all the debts ok, 1.35 Vram and such!

    Could the problem really be in the GPU?

    Could it be the BIOS?

    Thank you in advance!​
    06-05-2025, 09:04 AM
  • V4Vtwo
    rtx 3090 FTW3 no power
    by V4Vtwo
    have a rtx3090 with no power, can someone tell me if 1.4ohm on PS_NVVDD_DRVON is normal (pin31 on AOZ5311)?
    i checked all the voltage rails and fuses and they seem okay 12v. but i am missing PS_5V_PGOOD
    closest schematic i found is:
    MS_v389
    NVIDIA_GeForce_RTX_3090_600-1G132-0030-300_PG132-A02_Rev_C_

    this is readings from U31
    PS_5V_EN 2.5v
    PS_5V_SW_VCC 5V
    PS_5V_SW_BOOT 9.84v
    PS_5V_PGOOD 0v
    PS_5V_SW_PHASE 5v
    12V_EXT8_F1_RTD3 12v

    thank you
    06-09-2025, 07:27 PM
  • Docus
    Legion Y540 17irh motherboard issue ( need help to know how to diagnose my motherboard)
    by Docus
    Hi everyone 😀,

    I'm here today to ask for help with repairing the motherboard of a [B]Lenovo Legion Y540 17IRH[/B].

    To give you some context, I'm passionate about computer repair so much so that I've invested in a lot of tools and started practicing on dead and old hardware. I've been learning how to solder and desolder components, mostly focusing on phone repairs.

    Recently, I bought a broken Lenovo Legion Y540 17IRH for just €150, and there are two main reasons why I made this purchase:[LIST=1][*][B]I already own the exact same model[/B], but its plastic...
    06-10-2025, 04:24 PM
  • judamex
    HP16 DAG3MMB3AAO REV A No power on, no led charger
    by judamex
    I have an HP 16 DAG3MMB3AAO REV A. The charge LED doesn't turn on.
    So far, I've checked the three input MOSFETs, and all three seem to be in perfect condition. The charge IC is a BQ24781. The voltages I've checked are:
    VCC: 19V
    REGN: 6V
    ACDET: 2.45
    ACOK: 2.85

    It's striking that I don't have voltages on the ACP, ACN, and CMSRC.
    I'm a bit stuck on how this controller works and why it won't turn on.​
    Yesterday, 05:08 PM
  • dangminhthuongld
    dell 5391 wasp13 18769-1 n94g2
    by dangminhthuongld
    my dell 5391 has an error that can't use the touchpad, I've loaded another bios but now my computer doesn't boot, it eats line 0.44 and then shuts down, won't boot anymore
    can anyone help me with this case? I loaded the old bios but it still doesn't boot
    INFO
    WASP13-MB
    18769-1
    N94G2$LA
    SVT: DT09003
    CPU I5 GEN 10​
    06-11-2025, 09:19 PM
  • ary89
    Help!, Acer Aspire A314-21(DA0ZASMB8D2 Rev. D) Flicker
    by ary89
    Hello, can someone help?, this Acer Aspire A314-21(DA0ZASMB8D2 Rev. D), flashing/flickering LCD when brightness set to full, sometimes it changes to green, red and white screen, I think there is problem with backlight control or LCD power, I have DA0ZASMB8D0 boardview and schematic, but not real D2(14 inch), but component look similiar, I don't have osciloscope to measure voltage ripple to lvds route, but I highly suspect it must be it, can someone enlight me?
    06-11-2025, 07:09 PM
  • claws77
    FX553VE-DM318T(FX553v) not POSTING
    by claws77
    Cpu i7-7700hq Ram - 8gb samsung, 32 gb sk hynix
    Gpu - nvidia geforce 1050ti
    Ssd orion o700
    Hdd hgst721010A9e630

    See images


    What's not working right?
    The system does not even POST, display is black,
    LEDs on - power led, aiplane mode, capslock fpr few seconds in the start(when connected to ac power) only.


    When did the problem happen?
    My laptop had dual boot setup, ubuntu and windows 10.
    It already had a moklist error, that would occur when i tried to boot ubuntu.
    ...
    05-17-2025, 04:09 PM
  • wrighthm
    MacPro 5.1 330-2337-A mainboard No Powerup, PSU OK,
    by wrighthm
    Good Morning All. I know this has some exposure in the forum but hoped somebody could help.

    I have a MacPro 5.1 that wont power on. Power Button LED never illuminates. I followed the Service Guide and removed all parts When plugging in power i get the two CPU TEMP RED led's flash once and I can press the Diag LED and get the Standby LED. If I remove Power I get the same two LED flash. I have tried shorting SYS PWR pads to force start the board and nothing happens. I have also tried shorting the SMC reset with no result. I changed the BIOS Battery too. Finally I pulled the PSU, Shorted...
    Yesterday, 09:23 PM
  • sunofra78
    Acer N20C5 Laptop (Board LA-K701P) Component Identification
    by sunofra78
    Hi.
    Is someone able to help with identifying this component? AWVDQF is written on it.
    Thanks!​...
    Yesterday, 09:08 PM

Trending

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  • sunofra78
    Acer N20C5 Laptop (Board LA-K701P) Component Identification
    by sunofra78
    Hi.
    Is someone able to help with identifying this component? AWVDQF is written on it.
    Thanks!​...
    Yesterday, 09:08 PM
  • mh123
    hp 32 mb unlocker
    by mh123
    hi please i need hp tool or canone help me to unlock bios password with hex i have many hp 840 g5-g6 with password and i dont have to unlock them
    thanks
    Yesterday, 10:56 AM
  • judamex
    HP16 DAG3MMB3AAO REV A No power on, no led charger
    by judamex
    I have an HP 16 DAG3MMB3AAO REV A. The charge LED doesn't turn on.
    So far, I've checked the three input MOSFETs, and all three seem to be in perfect condition. The charge IC is a BQ24781. The voltages I've checked are:
    VCC: 19V
    REGN: 6V
    ACDET: 2.45
    ACOK: 2.85

    It's striking that I don't have voltages on the ACP, ACN, and CMSRC.
    I'm a bit stuck on how this controller works and why it won't turn on.​
    Yesterday, 05:08 PM
  • enlot
    Lenovo ThinkCentre M75q Gen5 bios password
    by enlot
    Hello!

    I'm trying to remove the bios password of an Lenovo ThinkCentre M75q Gen5
    Unfortunately i cant find many resources about the Gen5 or the bios chip.

    Bios chip is XMC 25RU256CXIQ.
    SN is GM0QDZ77

    Let me know if there is an issue with the attached bios dump, as this is my first attempt and i dont have a wson8 clip
    Would be great if someone could decrypt the password from the dump, but if thats not possible i can attempt to flash the chip (hoping my crappy solder job works)...
    Yesterday, 03:33 PM
  • wrighthm
    MacPro 5.1 330-2337-A mainboard No Powerup, PSU OK,
    by wrighthm
    Good Morning All. I know this has some exposure in the forum but hoped somebody could help.

    I have a MacPro 5.1 that wont power on. Power Button LED never illuminates. I followed the Service Guide and removed all parts When plugging in power i get the two CPU TEMP RED led's flash once and I can press the Diag LED and get the Standby LED. If I remove Power I get the same two LED flash. I have tried shorting SYS PWR pads to force start the board and nothing happens. I have also tried shorting the SMC reset with no result. I changed the BIOS Battery too. Finally I pulled the PSU, Shorted...
    Yesterday, 09:23 PM
  • samtron786
    Asus Eee PC 1005PE the battery isn't charging
    by samtron786
    Hello everyone
    Hello, the problem is that after connecting the power adapter, the power supply flashes and doesn't charge the battery. Interestingly, it's causing a short circuit. So I decided to open the notebook to check. I'm missing the circuit diagram.
    Greetings
    Thank you very much​
    06-10-2025, 03:09 PM
  • EineWildeStehlampe
    AMITSESetup Decryptor
    by EineWildeStehlampe
    As a lot of older firmware images use the well known, [I]incredibly secure[/I] AMI XOR key to encode the supervisor password in the firmware image, I wrote a small Python tool to automate the process of searching through the image and decrypting the key. It is far from perfect but works well enough for me to share.

    The tool uses UEFIExtract to dump the entire image, naively search for a folder ending in "AMITSEDecrypt", iterate through the body.bin to find all possible hashes stored in there, decrypt them with the XOR key, remove every second byte, then convert to ASCII....
    01-06-2022, 02:21 AM
  • minhduc18
    help unlock passbios unowhy Y13G010S4EI
    by minhduc18
    please unlock pass bios!...
    05-08-2021, 10:41 PM
  • bod0007
    Incorrect DMI details
    by bod0007
    Got a used HP Elitebook 855 G7, I noticed MPM errors, bios errors, missing SN, product N, featurebyte and so on. gave seller to fix and collect it after 2days. on receiving the PC I noticed touch-screen not working, when I checked more details, found out it has been given DMI details of HP Elitebook 845 G7, instead of HP Elitebook 855 G7. seller has refused to help further. I need help on this. difference between 845 G7 and 855 G7 is the screen and touch panel (14in vs 15.6in with touch). same bios family S77.

    Thanks
    Yesterday, 12:21 PM
  • the Benninger
    FDI55 LA-J081P schematics and o boardview
    by the Benninger
    hi folks, requiring the schematics or the board view of this board. Initially, the PU301 was overheating, power supply enter protection mode upon reconnecting the charger. I replaced it, it doesn't overheat but it also doesn't turn on.

    PD I took measurements and attached them in the circuit image, it indicates that it would be 5v and they are not being completed if I am wrong. [ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3657985}[/ATTACH]...
    Yesterday, 11:24 AM
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