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Badcaps Capacitor & Electronics Repair Forum
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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: 4
Last Post: ncp81208 datasheet
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BAKEEL1990
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: 3,198 Posts: 32,763
3,198 32,763
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!
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4,509 74,909
Dan81
by Dan81
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.
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Last Post:
4,012 44,679
Satvik Hardat
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: 6,937 Posts: 38,001
6,937 38,001
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: 503 Posts: 5,465
503 5,465
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: 32,500 Posts: 311,640
32,500 311,640
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BIOS Requests ONLY! (12,960/158,129)
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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!
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5,337 75,773
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!
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27,534 375,555
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!
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4,208 65,464
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!
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308 1,693
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!
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2,350 27,639
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: 230 Posts: 4,015
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watergremlin0
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: 1,032 Posts: 11,066
1,032 11,066
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.
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1,383 19,507
220vdc
by 220vdc

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There are currently 339394 users online. 3827 members and 335567 guests.

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

Badcaps Statistics

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Topics: 103,017   Posts: 1,280,539   Members: 502,634   Active Members: 18,690
Welcome to our newest member, Mjondolo Fam.

Latest Topics

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  • dutchgaucho
    HP Probook 440 G7 with endpoint issue
    by dutchgaucho
    Hi guys,

    I'm having a Probook 440 G7 with the infamous "endpoint security controller" message. Hope somebody can help. Flashing a clean BIOS alone does not help, the message remains so apparantly it needs to be patched like some other models.

    Details:
    Probook 440 G7
    Mobo model: DA0X8MMB6D0 rev: D
    Serial number: 5CD034LDWB

    The orignal dumps are attachted.

    Thanks!...
    Today, 07:29 AM
  • Magnusa2
    dell 5590 (la-f411p) no display
    by Magnusa2
    hii . ihave dell 5590 with no power. all voltage is ok. [B]pch plt rst [/B]also present . any solutions ?hii . ihave dell 5590 with no power. all voltage is ok. [B]pch plt rst [/B]also present . any solutions ?hii . ihave dell 5590 with no power. all voltage is ok. [B]pch plt rst [/B]also present . any solutions ?
    Today, 07:18 AM
  • nezocas
    Samsung UE40ES6530
    by nezocas
    Hello,

    Need help with this dead tv.
    Power supply: BN44-00520C

    Found this burned components: FP801S 4amps fuse / DS814 and DS815 both 1n4007 / DS806 1n4007 and CS809 22pF 1Kv.
    After all changed pluged only the power supply to AC with a 40W bulb in series..... It ligthed up strong.... so we still have a short.
    Didnt find any shorts, made the purchased of the ICS801S (SQD2011K).

    Today it arrived, but no changes at all.... still shorted power supply.
    Also checked QP805S / QP806S both MDF10N60.

    Best regards
    Nezocas
    06-14-2024, 09:20 AM
  • ekvalon
    HP Elitebook 850 G6 BIOS UNLOCK password plase
    by ekvalon
    Hello all,

    I've now got a HP 850 G6 that has a bios password.
    I've flashed the 256 chip, boots up "Bios update in progress" then password remains
    Removed and flashed the 128 Chip, says AMT disabling and reboots and password remains.

    I'm using the HPUnlocker tool.. ( I know it says unsupported, but Gave it a go as cannot get RC to work. )

    Do I need to flash them both at the same time and then boot? or am i using the wrong tool.

    Attached dumps.​...
    Today, 06:51 AM
  • titomno2
    Acer A315-41G similar to AN515-42, AC OK Battery OK but not charging
    by titomno2
    Hi guys,
    I currently trying to figure out why the laptop of my friend did not charge.
    It is a Acer AN515-42 (Ryzen 5 2500U), I manage to make it works on AC and battery but no charging.
    At first it was not working on Battery, I discovered that PQ201 was knocked off and replace it => work on battery precharged on another computer.
    I also checked the small resistors between PQ312 and PQ201 and even if they are ugly values are OK.
    My issue, when I plug the charger computer off, it drains 0.25A during few seconds with amber light on (charging) then amber light blinks...
    06-11-2024, 11:52 AM
  • danny1ro
    Testing motherboard VRM without CPU
    by danny1ro
    Hey guys, I'm new here and I'd like to say thanks for all the knowledge on this forum first of all.
    I am learning electronics repair, been fixing GPUs and laptops mainly until now, and I'm slowly trying to fix desktop motherboards now.
    I had a few successes until now, but I messed things up with one of my recent attempts, namely a Gigabyte H410M S2 with which I burned my test cpu.
    I had identified a mosfet which was burned, removed it, cheched for shorts and I didn't find any.
    When the new mosfet came, I put it on the board and checked for shorts again and didn't find any....
    06-08-2024, 08:38 AM
  • chinh
    ASUS ZENBOOK Q420V Start the computer with a blue screen
    by chinh
    [B]ASUS Q420V[/B]
    [B]Serial number: RAN0LP034069431[/B]
    [B]Mb: UX3404_MB[/B]
    :[B]NB6371A_MB_V3[/B]
    [B]Attached is the main bios[/B]
    [ATTACH]n3291312[/ATTACH] ​
    [B]ASUS Q420V[/B]
    [B]Serial number: RAN0LP034069431[/B]
    [B]Mb: UX3404_MB[/B]
    :[B]NB6371A_MB_V3[/B]
    [B]Attached is the main bios[/B]
    [ATTACH]n3291312[/ATTACH] ​[B]ASUS Q420V[/B]
    [B]Serial number: RAN0LP034069431[/B]
    [B]Mb: UX3404_MB[/B]
    :[B]NB6371A_MB_V3[/B]
    [B]Attached is the main bios[/B]
    [ATTACH]n3291312[/ATTACH] ​
    [B]ASUS Q420V[/B]...
    06-15-2024, 08:36 PM
  • Friend33
    Updating Serial Number on EliteBook x360 1030 G3
    by Friend33
    I have an EliteBook x360 1030 G3 and after a motherboard replacement, I want to change the serial number and the FeatureByte. None of the known methods work. MPM is locked and cannot be unlocked via EFI.

    Therefore, I read out the two chips and adjusted the serial number, FeatureByte, and Born Date using a hex editor. Now the system won't start anymore. I think I did something wrong with the FeatureByte, as there was a message indicating that the file size was changing.

    My serial number is: 5CD849BL7Q
    FeatureByte: [LEFT][COLOR=#212529][FONT=HPSimplified][SIZE=14px]3X476J6S6b7B7H7M7R7W7maBaEapaqauawbVbhcAd6dUdpdqfXgdguhKhZjh.qM[/SIZE][/FONT][/COLOR]...
    Yesterday, 03:55 PM
  • sam_sam_sam
    APC BR1000G battery backup has a weird issue sometimes a bad battery icon and making a weird sound for about 30 seconds
    by sam_sam_sam
    This started a few days ago and does this about every 8 hours

    After it does this it goes back to normal no bad battery icon and no weird sounds and it goes to battery backup mode so I am not sure what is going on with this battery backup

    The battery backup is about 3 or 4 years old

    Dose anyone have any idea on how to troubleshoot this issue I have never had a battery backup do this kind-a thing before so I am not sure exactly how to troubleshoot it and where to start
    06-02-2024, 02:30 AM
  • ChrsOvkll
    Bios request for L15 Gen 4
    by ChrsOvkll
    Hello Guys, I am looking for a working bios for a L15 Gen 4 ThinkPad) - Type 21H4

    Machine type model: 21H4000TLM

    I lost my backup and couldn't retrieve it, it's blank now since it reads all FFFFs, can anyone help me please?
    06-09-2024, 06:46 PM

Trending

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  • dutchgaucho
    HP Probook 440 G7 with endpoint issue
    by dutchgaucho
    Hi guys,

    I'm having a Probook 440 G7 with the infamous "endpoint security controller" message. Hope somebody can help. Flashing a clean BIOS alone does not help, the message remains so apparantly it needs to be patched like some other models.

    Details:
    Probook 440 G7
    Mobo model: DA0X8MMB6D0 rev: D
    Serial number: 5CD034LDWB

    The orignal dumps are attachted.

    Thanks!...
    Today, 07:29 AM
  • Magnusa2
    dell 5590 (la-f411p) no display
    by Magnusa2
    hii . ihave dell 5590 with no power. all voltage is ok. [B]pch plt rst [/B]also present . any solutions ?hii . ihave dell 5590 with no power. all voltage is ok. [B]pch plt rst [/B]also present . any solutions ?hii . ihave dell 5590 with no power. all voltage is ok. [B]pch plt rst [/B]also present . any solutions ?
    Today, 07:18 AM
  • ekvalon
    HP Elitebook 850 G6 BIOS UNLOCK password plase
    by ekvalon
    Hello all,

    I've now got a HP 850 G6 that has a bios password.
    I've flashed the 256 chip, boots up "Bios update in progress" then password remains
    Removed and flashed the 128 Chip, says AMT disabling and reboots and password remains.

    I'm using the HPUnlocker tool.. ( I know it says unsupported, but Gave it a go as cannot get RC to work. )

    Do I need to flash them both at the same time and then boot? or am i using the wrong tool.

    Attached dumps.​...
    Today, 06:51 AM
  • Kad009
    T460s no power
    by Kad009
    Hi hope everyone is well
    This is my first post sorry if I miss anything let me know
    I have a T460s which shows no lights and does not power on there is 19.6v on the main power rail
    The ethernet port lights flash
    I reprogrammed bios no luck
    thanks in advance
    06-18-2024, 02:46 PM
  • carrzkiss
    Cyberpower cps1500avr not charging batteries
    by carrzkiss
    Hello, all.

    Cyberpower Battery Backup Unit.

    I bought two new ML18-12 batteries through Amazon (They have already refunded my money for the two batteries as we thought the batteries might have been bad.)
    When I got them in, they were not fully charged. I connected them to the UPS and waited 24 hours before connecting any networking equipment.
    In parallel, they read 24v, but within 24 hours, the meter on the front of the unit dropped from 4 to 3 bars on the battery charge indicator.
    Checking the voltage, it was down to 22v.
    I quickly removed everything...
    06-15-2024, 02:10 PM
  • davidebeatrici
    MacBook Air A1466 820-00165-A (no power, no light)
    by davidebeatrici
    I was brought the computer as it showed no sign of life. Upon opening it I immediately noticed liquid damage in at least one critical spot.

    [URL=filedata/fetch?filedataid=341017][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3293648}[/ATTACH][/URL] [URL=filedata/fetch?filedataid=341018][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3293649}[/ATTACH][/URL] [URL=filedata/fetch?filedataid=341019][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3293650}[/ATTACH][/URL]...
    06-19-2024, 06:36 PM
  • watergremlin0
    Wine Cooler CD-110-B
    by watergremlin0
    Anyone have an experience with this board? Ive actaully replaced 2 caps on it before. Worked for a few years. However this time around they all seem good. Ive pulled a few and tested they all test in range. Checked a few of the diodes they all seem good. dont see any popped resistors or anything. The light and screen power on however the fans never kick on. Havent found a skematic for this board however my guess would be a component in line with the fan.

    [ATTACH=JSON]{"alt":"Click image for larger version Name:\t1.jpg Views:\t0 Size:\t111.8 KB ID:\t3292895","data-align":"none","data-attachmentid":"3292895","data-size":"custom","height":"355","width":"486"}[/ATTACH]...
    06-18-2024, 08:03 PM
  • Thomas Frassineti
    Lenovo IdeaPad Flex 5 14ALC05
    by Thomas Frassineti
    Hi guys, this laptop was working perfectly, but the other day it got auto powered off because of low battery, and its not running anymore since.
    Initially, it wasn't giving any sign of live, even once plugged back to the AC.

    So I opened it, removed the battery, re-plugged it in, re-plugged AC, and now there are some signs of life but:
    - The screen remains permanently black
    - The keyboard lights up, and keeps the light up permanently (same for power button)
    - The CPU fan runs
    - No matter what buttons I press, or what combinations of power off/on I do,...
    06-19-2024, 06:39 AM
  • GlassMonolith
    Asus Rog GL703G/Battery Connector Short
    by GlassMonolith
    Hi, all. I have an Asus Rog Strix GL703G. Yesterday I took it apart to clean out the dust and redo the thermal. Unfortunately, when I attempted to pull the battery, the metal retaining clip (unable to retain itself due to genius engineering) popped off and shorted across the capacitors behind it. Now I have no response from the laptop with or without the battery.

    I'm hoping maybe someone can help me read the board and figure out what potentially shorted. I have a soldering station, I can run hot air, I have a multimeter, I just have no idea how to trace or measure the power circuit....
    03-08-2024, 04:35 PM
  • Satvik Hardat
    how to get video out on a laptop mobo?
    by Satvik Hardat
    [B]KLVL-WFE9Q- from Huawei [/B]

    I have a laptop motherboard without any thing just bare motherboard I know it turns on by shorting the EC chip's nsbon to gnd, how do I get a video out, the ports-USB c (not thunderbolt), hdmi full size, audio jack? How do I get a video out?

    P.S- i dont have a ssd rn so cant attach it to the m.2 slot & there r 2 usb port in this mobo but they r on a daughterboard which i dont have
    [B]KLVL-WFE9Q- from Huawei [/B]

    I have a laptop motherboard without any thing just bare motherboard I know it turns on by shorting the
    Today, 02:44 AM
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