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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: 41,488
234 41,488
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
xaruqui
by xaruqui
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: 3,178 Posts: 32,638
3,178 32,638
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: 4,491 Posts: 74,776
4,491 74,776
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: 3,959 Posts: 44,236
3,959 44,236
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: 6,774 Posts: 37,049
6,774 37,049
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: 499 Posts: 5,433
499 5,433
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: 31,659 Posts: 301,043
31,659 301,043
Sub-Forums:
BIOS Requests ONLY! (12,615/151,291)
Schematic Requests ONLY! (4,703/28,236)
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: 5,314 Posts: 75,656
5,314 75,656
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: 27,409 Posts: 374,140
27,409 374,140
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: 4,169 Posts: 65,139
4,169 65,139
jm1234
by jm1234
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: 300 Posts: 1,661
300 1,661
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: 2,309 Posts: 27,385
2,309 27,385
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: 220 Posts: 3,888
220 3,888
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: 996 Posts: 10,836
996 10,836
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: 1,373 Posts: 19,313
1,373 19,313

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There are currently 600882 users online. 4161 members and 596721 guests.

Most users ever online was 1,196,122 at 03:31 PM on 12-14-2023.

Badcaps Statistics

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Topics: 101,840   Posts: 1,264,515   Members: 490,006   Active Members: 16,312
Welcome to our newest member, orng1215.

Latest Topics

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  • norbiszoke
    Samsung 50AU7172, only blinking red light
    by norbiszoke
    Hello,

    We have this set here in our shop that is not ginving sign of life besides red light that is blinking one time after pressing the button and nothing more... After detaching the mainboard from the PSU (this set has separate board thank god?! or not...) the backlight comes on. After reattaching nothing besides red light.... Can anyone from the forum help me here? Thank you in advance. Here's a link with images of the mainboard and the memory IC's that are on it.


    Regards, Norbert!...
    Today, 06:54 AM
  • Ross Kohler
    Diagnosing South Bridge (FH82H370) on Asus H370-Pro Gaming Motherboard
    by Ross Kohler
    Hi,

    I'm learning about motherboard repair and I believe I've traced the issue down for the South Bridge on the particular motherboard I'm working on. My path of concluding that:
    - There's no sign of any attempt to power on when pushing the power button.
    - No PSON signal is reaching the 24-pin ATX connector.
    - The Super IO chip is receiving the PS_SWITCH signal from the power button and is relaying this signal back to the South Bridge.
    - The Super IO is not receiving the S_SLPS#_R signal back from the South Bridge
    - If I pull the Super IO S_SLPS#_R pin...
    Yesterday, 09:36 AM
  • Prott
    NUC BLKNUC7i7DNKE bios
    by Prott
    Hello, my apologies for reviving this thread. I have a 8gen NUC with a (possibly?) dead bios - the fan starts up, slows down, but it doesn't show any picture (recovery button doesn't work either). The dump is attached.

    Could anybody please help me with fixing it? I am not able to find any BIOS dumps for this model anywhere.
    [B]S/N:[/B] BTDN9320085T
    [B]Model: [/B]BLKNUC7i7DNKE

    Thank you so much! Hello, my apologies for reviving this thread. I have a 8gen NUC with a (possibly?) dead bios - the fan starts up, slows down, but it doesn't show any picture (recovery...
    Yesterday, 07:02 AM
  • vinzmt
    820-00165 no backlight
    by vinzmt
    hi to all
    i have this logic board with no back light, image is present.
    unknow istory.

    on q7707 pin 5 EDP_BKLT_EN found 3.3 v, pin 1 gnd damage, pin 2 BKLT_PLT_RST_L only 0.08v (but is 3.3 on r2088 pin 2)
    remove q7707 and find this

    any suggestions?
    thanks...
    Today, 07:05 AM
  • StormCrow
    HP Envy 14-eb0013na BIOS
    by StormCrow
    Hi folks
    Got a 14-eb0013na here that won't boot - have attached original BIOS dump
    Serial number: 5CD203HPS8

    I wonder if anyone could sort this for me so I can re-flash?

    Also interesting in learning how to do it myself, is it the ME region that needs clearing on the HP laptops?

    Many thanks...
    Today, 07:48 AM
  • hasefroch
    Help to identify blown chip - HP G4 240
    by hasefroch
    Hello everyone, I got this notebook, mainboard SKITTL10-6050A273001-MB-A1

    Saw the U6100 blown up, so didn't even try to power it up.
    Sems that there is not a schematic or boardview of this one, so I attached some pictures (some look distorted; the ic looks like a qfn-16 3x3).
    Maybe is the RT2790A; looks to me compatible but their product code is 3B= XX and mine is 38=
    Hope someone knows this one.
    Thanks in advance.
    Today, 06:29 AM
  • chth96
    Can I replace KME cap with Samxon GF cap?
    by chth96
    Hello.
    I have 29inch LG CRT TV,And Yesterday,Whenever I connect AC power cord to power outlet without switch on, I heard a sound like white noise, And When I switched on this CRT TV, It sometime displayed correctly But usually It won't last more than 20 minute and The screen begin to dark and It finally did not display at all for hours..
    Today,I dismantled its plastic case and discharged the biggest capacitor(400wv 470uf) which still holds 250 voltage,and I finally detached PCB from cathode-ray tube.
    I measured ESR value of most of caps in PCB with MESR-100 and I found that KME(25v...
    Today, 07:11 AM
  • monitron
    Help identify part on a HP Pavilion 27-d0010nd
    by monitron
    I am working on a HP Pavilion 27-d0010nd that has dark screen. It appears that the backlight is not working.
    Now i discovered that the backlight circuit is on the scalar board and has a burnt mosfet. (caused by a ceramic capacitor short).

    If anybody can help me identify the partnumber it would be a very great help.

    The board number is:

    L76838-001
    L99794-001
    BigBen Scalar board.



    [URL=filedata/fetch?id=3253797&d=1713275701][ATTACH=JSON]{"alt":"Click image for larger version Name:\tuhd-scalar-board-aio-hp-27.jpg...
    Yesterday, 07:53 AM
  • fredyjbi
    please help friends x1 yoga 7th no display beep melody thank you
    by fredyjbi
    please help friends x1 yoga 7th no display beep melody thank you...
    Today, 03:14 AM
  • Carl0s-
    iPad 5th gen (A1823) - No charge but recognized by finder
    by Carl0s-
    Hi,

    Sooo - our IT got a pile of old iPads that the sales guys have been mistreating. These are free for grabs if you want to try to get one working. Thought I'd give it a try - if I get at least some life to I can give to my kid to entertain during a car rides.

    But the iPad it self - its a 5th gen cellular model. When I initially plug it in it was completely dead. It was not recognized by my Mac nor it started to charge. Disassembled it opened up the battery connector and checked the battery voltage. My multimeter showed 0,7v. Had a spare micro-usb charging board lying...
    04-15-2024, 12:51 PM

Trending

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  • norbiszoke
    Samsung 50AU7172, only blinking red light
    by norbiszoke
    Hello,

    We have this set here in our shop that is not ginving sign of life besides red light that is blinking one time after pressing the button and nothing more... After detaching the mainboard from the PSU (this set has separate board thank god?! or not...) the backlight comes on. After reattaching nothing besides red light.... Can anyone from the forum help me here? Thank you in advance. Here's a link with images of the mainboard and the memory IC's that are on it.


    Regards, Norbert!...
    Today, 06:54 AM
  • fredyjbi
    please help friends x1 yoga 7th no display beep melody thank you
    by fredyjbi
    please help friends x1 yoga 7th no display beep melody thank you...
    Today, 03:14 AM
  • chth96
    Can I replace KME cap with Samxon GF cap?
    by chth96
    Hello.
    I have 29inch LG CRT TV,And Yesterday,Whenever I connect AC power cord to power outlet without switch on, I heard a sound like white noise, And When I switched on this CRT TV, It sometime displayed correctly But usually It won't last more than 20 minute and The screen begin to dark and It finally did not display at all for hours..
    Today,I dismantled its plastic case and discharged the biggest capacitor(400wv 470uf) which still holds 250 voltage,and I finally detached PCB from cathode-ray tube.
    I measured ESR value of most of caps in PCB with MESR-100 and I found that KME(25v...
    Today, 07:11 AM
  • vinzmt
    820-00165 no backlight
    by vinzmt
    hi to all
    i have this logic board with no back light, image is present.
    unknow istory.

    on q7707 pin 5 EDP_BKLT_EN found 3.3 v, pin 1 gnd damage, pin 2 BKLT_PLT_RST_L only 0.08v (but is 3.3 on r2088 pin 2)
    remove q7707 and find this

    any suggestions?
    thanks...
    Today, 07:05 AM
  • hasefroch
    Help to identify blown chip - HP G4 240
    by hasefroch
    Hello everyone, I got this notebook, mainboard SKITTL10-6050A273001-MB-A1

    Saw the U6100 blown up, so didn't even try to power it up.
    Sems that there is not a schematic or boardview of this one, so I attached some pictures (some look distorted; the ic looks like a qfn-16 3x3).
    Maybe is the RT2790A; looks to me compatible but their product code is 3B= XX and mine is 38=
    Hope someone knows this one.
    Thanks in advance.
    Today, 06:29 AM
  • trepachka
    Help me identify this component - HP Spectre 14-ea0023dx
    by trepachka
    See attached image. It says "X322" on it. This is a follow-up to my previous posted topic. The issue is upon lid closing, the screen turns off. When lid is opened, the screen remains dark.

    This component is positioned right on the edge of the motherboard and has like a cradle made inside the case. I am assuming this component is used as a lid close sensor.

    Please, help me identify it. Thank you....
    Yesterday, 03:26 PM
  • StormCrow
    HP Envy 14-eb0013na BIOS
    by StormCrow
    Hi folks
    Got a 14-eb0013na here that won't boot - have attached original BIOS dump
    Serial number: 5CD203HPS8

    I wonder if anyone could sort this for me so I can re-flash?

    Also interesting in learning how to do it myself, is it the ME region that needs clearing on the HP laptops?

    Many thanks...
    Today, 07:48 AM
  • jimmy2022
    lenovo 13acnf
    by jimmy2022
    schematic required for lenovo 13acn5

    yoga 7 series...
    Today, 03:46 AM
  • Carl0s-
    iPad 5th gen (A1823) - No charge but recognized by finder
    by Carl0s-
    Hi,

    Sooo - our IT got a pile of old iPads that the sales guys have been mistreating. These are free for grabs if you want to try to get one working. Thought I'd give it a try - if I get at least some life to I can give to my kid to entertain during a car rides.

    But the iPad it self - its a 5th gen cellular model. When I initially plug it in it was completely dead. It was not recognized by my Mac nor it started to charge. Disassembled it opened up the battery connector and checked the battery voltage. My multimeter showed 0,7v. Had a spare micro-usb charging board lying...
    04-15-2024, 12:51 PM
  • s_henya
    Evga Geforce GTX750TI beeping
    by s_henya
    Hi got this cute GPU,
    PC is powering on, GPU is getting power ~40deg
    Cmos speaker is beeping.
    other cards working fine on this build
    tested the card on 2 other builds- same beep
    visual inspection didn’t reveal any issues or missing components.

    any test points?...
    Today, 12:25 AM
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