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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: 734
45 734
Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
Topics: 235 Posts: 44,907
235 44,907
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: 241 Posts: 254
241 254
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: 3,222 Posts: 32,926
3,222 32,926
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: 4,539 Posts: 75,120
4,539 75,120
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: 4,085 Posts: 45,263
4,085 45,263
jons
by jons
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: 7,205 Posts: 39,936
7,205 39,936
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: 510 Posts: 5,515
510 5,515
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: 33,816 Posts: 329,753
33,816 329,753
Sub-Forums:
BIOS Requests ONLY! (13,475/170,880)
Schematic Requests ONLY! (5,082/30,368)
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: 5,361 Posts: 76,037
5,361 76,037
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: 27,721 Posts: 378,775
27,721 378,775
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: 4,237 Posts: 65,729
4,237 65,729
speggio91
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: 317 Posts: 1,725
317 1,725
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: 2,405 Posts: 27,929
2,405 27,929
DAVEMAC02
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: 263 Posts: 4,371
263 4,371
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: 1,063 Posts: 11,322
1,063 11,322
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: 1,399 Posts: 19,736
1,399 19,736
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: 101,078 Posts: 101,078
101,078 101,078
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: 8,712
8,712 8,712

What's Going On?

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There are currently 455461 users online. 4853 members and 450608 guests.

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

Badcaps Statistics

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Topics: 213,777   Posts: 1,410,978   Members: 524,897   Active Members: 20,362
Welcome to our newest member, sal agi.

Latest Topics

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  • tomodachi
    Lenovo Ideapad Gaming 3 15ARH05 NM-D191 processor voltages disappear at startup
    by tomodachi
    MB schematic and boardview
    [URL]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/96430-need-schematic-and-boardview-for-nm-d191?p=1802186#post1802186[/URL]

    This one came in with no display complaint.
    MB powering up with all CPU coil voltages of CPU and GPU present, appear to be drawing around 1 to 1.8 amps on boot cycle, then in 3 seconds CPU phases on PL3003,PL3002,PL3001,PL3000 disappear, leaving MB drawing only 0.25 amp with GPU core voltages still on....
    Yesterday, 04:21 AM
  • 08caine15
    HP 14s-cf0057TU caps lock blinking 3 long and 2 short
    by 08caine15
    Hi everyone , I need your help with this board and it's giving me a hard time . 3 long and 2 shorts base on HP site it's a MEMORY ERROR , tried replacing RAM it's still the same. RAM VOLTAGE has 1.2V i think it has a complete voltage a 3.3v and there's also ah 2v , tried checking pins if there any damage or unsoldered and everythings good , now I don't what should I do next. Also tried reflashing and programming the bios and still the same, hopefully there's someone who can help me with this since im having like 4 laptop with the same error.
    Yesterday, 02:23 AM
  • danny34
    Thinkpad E15 Gen2 (GE520) hot PU202
    by danny34
    Hello folks,

    I have a Thinkpad E15 Gen2 with an AMD processor. NM-C771 motherboard GE520.

    The PU202 gets hot. I was able to measure that there is a short circuit to ground at pin 13 (+3VL). All other pins are ok.

    I've already taken a few measurements, but can't find the cause of the short circuit. Do you have any ideas?

    I have already soldered out the PU202, but there is still a short circuit on the conductor track

    Thank you and best regards​
    09-15-2024, 09:57 PM
  • sibernetic
    danjimb18a0 rev a missed component
    by sibernetic
    Coke spilled on the computer that came from the customer. When it first arrived, there was data on the screen but it was shutting down immediately. After cleaning the motherboard, the device started but there was no image. Then I realized that there were missing parts around the integrated circuit in the picture. I need a high quality image of the motherboard for this part....
    10-02-2024, 01:38 PM
  • Maksioja
    MSI Katana GF66 - no power on, taking 20v, 0,055A.
    by Maksioja
    Hi guys,

    It's my first post, because till now I found everything on this forum, but I'm little bit stuck now, so I'm asking you for help. It's my first gaming laptop, so I need some advice .

    I bought defect MSI GF66 Katana with GTX3060 GPU.
    First when I open it - you can easily notice - somebody open it before, but I didn't found any tech working for it, just maybe somebody open it for cleaning.

    What I did so far:

    Replaced parts:[LIST][*]ALC233 - was exploded[*]APL5934C - was exploded[*]2x FDPC5018SG - went shorted when I took out UP1666Q.[*]UP9512Q...
    09-30-2024, 08:26 AM
  • justice171
    Lenovo E15 Gen 2 Keeps Beeping Loud Noise
    by justice171
    Hello Badcaps Members,

    I'm experiencing an issue with my Lenovo ThinkPad E15 Gen 2, and I'm hoping someone here might have some insight. The laptop charges to full capacity, but as soon as I power it up, I get a loud sound, and there's no POST.

    I disconnected the battery and connected a USB meter, which shows 20V 0.23A when the sound occurs. I've already tried changing the screen, but it didn't resolve the issue.

    [B]When I use Lenovo PC Diagnostics App I get results as 01000[/B]

    Here are the details:[LIST][*][B]Model[/B]: Lenovo ThinkPad E15...
    10-01-2024, 09:19 PM
  • nikal
    Help Request for Lenovo L470 - No power
    by nikal
    Hi

    this is my first ever message in this forum that I follow for a very long time now and I have used the power of collective knowledge so many times.

    I do repairs, not professionally (for the moment) and recently I stuck on a case with a L470 Lenovo laptop.

    This laptop came to me with no power issue. I diagnosed it and I found the following.

    1. A shorted and exploded ceramic capacitor (probably on main power rail)
    2. Internally shorted the 3.3 ALWP buck converter
    3. Shorted (drain to source to gate) the first DC-IN mosfet.
    ...
    10-02-2024, 03:51 PM
  • itson
    HP 15-p049no BIOS bin needed (AMD processor)
    by itson
    Hello,
    Need bios for that model. USB recovery not working (flashing 2 times caps-lock) with latest version. Older version is not opening in my computer to make USB recovery drive

    MB nr DAY22AMB6E0 rev: E
    Serial: 5cd43613lx...
    Yesterday, 07:27 AM
  • Arshad alam4659
    MACBOOK PRO A2141 SSD SHORT
    by Arshad alam4659
    I HAVE A MACBOOK PRO A2141 820-01700 THIS BOARD IS PP2V5_NAND_SSD1 SHORT TO GROUND THEN I CHECK ONE SIDE U8600 IS SHORT THIS SIDE IS ONLY ONE CHIP U8600 OTHER SIDE
    PP2V5_NAND_SSD1 IS OK AND U9100 U9200 U9300 U9400 IS ALSO OK Will removing the U8600 fix the board or will I have to install a new one

    [COLOR=#8e44ad][B]Link to boardview[/B][/COLOR] --> [URL]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/77986-schematics-boardview-macbook-pro-16-model-a2141-020-01...
    10-01-2024, 08:26 AM
  • jons
    Need help identifying crystal
    by jons
    Got VW Bosch ECU with rotted away crystal oscillator and can't find frequency for it, it drives Bosch 30302 chip for which there is also no any datasheet. Markings on it says
    453NDK9X.
    and there is nothing on internets about it that I can find....
    10-02-2024, 09:50 AM

Trending

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  • jfett
    Dell latitude 3410 MOCKINGBIRD-L CML DIS 6L 19709-1
    by jfett
    Hello

    I need to unlock bios. Attached files.

    Service tag: 5M98P93

    Thanks...
    Yesterday, 08:26 PM
  • Lubazi
    DELL Precision 7540 Bios password
    by Lubazi
    [ATTACH=JSON]{"alt":"Click image for larger version Name:\txxxxx.png Views:\t0 Size:\t1.25 MB ID:\t3475007","data-align":"none","data-attachmentid":"3475007","data-size":"full","title":"mainboard.png"}[/ATTACH]



    SERVICE TAG: 270Q3Z2
    MAINBOARD: EDA50 LA-H271P Rev: 1.0

    Hello, my BIOS has a password, I need a BIOS that unlocks my password.
    I only have WINBOND 25Q80DVSIG1939 on the board
    Found as a BIOS chip, a 1 MB file is stored there. I uploaded...
    Yesterday, 03:58 AM
  • FourRunner
    Display issue Samsung TV UA65JS9000W
    by FourRunner
    I purchased a used Samsung TV model UA65JS9000W recently knowing it had an issue with the screen. When switched on the picture was bright both sides of the screen but a little darker in the middle of the screen. Thinking this was the back lights (side mounted LCD strips) I replaced these, however the issue is still there. I am now thinking it may be a TCOM issue, but am not sure, any advice on this would be appreciated. Also whilst changing out the back lights I noticed the the thick clear plastic sheet (maybe 1.5 to 2mm thick) below the diffusers there is cracking (up to 75mm) on the sides and...
    Yesterday, 07:05 PM
  • lrservicios
    Lenovo Ideapad 330 Bios request
    by lrservicios
    Hi all i have an ideapad 330 (intel core i3 version)
    I dont know exact model and serial number bottom sticker is erased.

    All i have is original BIOSBIN pulled from original chip, motherboard model is: DG421 DG521 DG721 NM-B241 REV:1.0 2017-02-17

    Symptom is computer starts but screen stays black please can anybody please fix this BIN for me please...
    Yesterday, 12:40 PM
  • Pedro Ramírez
    Bios Lenovo E41-50 (FLIT4 LA-671P)
    by Pedro Ramírez
    Hello, could you please 🙏 help me with the BIOS of this computer. I'm stuck in BIOS error. Backup and data attached

    Lenovo E41-50
    FLIT4 LA-K671P Rev. 1A Motherboard
    S/N: MP29GTQ2
    MTM: 82HW0011CL
    MO: MPNXB262703T​...
    Yesterday, 05:40 PM
  • nikal
    Help Request for Lenovo L470 - No power
    by nikal
    Hi

    this is my first ever message in this forum that I follow for a very long time now and I have used the power of collective knowledge so many times.

    I do repairs, not professionally (for the moment) and recently I stuck on a case with a L470 Lenovo laptop.

    This laptop came to me with no power issue. I diagnosed it and I found the following.

    1. A shorted and exploded ceramic capacitor (probably on main power rail)
    2. Internally shorted the 3.3 ALWP buck converter
    3. Shorted (drain to source to gate) the first DC-IN mosfet.
    ...
    10-02-2024, 03:51 PM
  • Francesc V.
    362142 pwm ic chip.............what it might be? Vd
    by Francesc V.
    I am trying to fix this 24Vcc swich power supply that has no output voltage. The problem might be in the PWM controller, however, I haven't been able to find the datasheet for this PWM IC tiny controller. Any idea?

    (I am attaching some pictures for a better understanding of my troubleshooting)


    [B]Tracking the PCB:[/B]

    GND pin 1
    Feedback pin 2
    RI pin 3 (100k between pin and hot ground).
    Sense pin 4 (470ohm to source)
    Vdd is pin 5
    Gate pin 6

    Maybe it's just an [B]OB2262/ OB2263MP [/B](or could be replaced by...
    Yesterday, 02:29 AM
  • waakye
    Dell XPS 13 9370 no power USB amp meter reads 5V , 0.11A
    by waakye
    Hello fellow bad caps members,
    I have a Dell XPS 13 9730 that a picked up today. The seller claimed that it stops working all of a sudden. The ammeter reads 5V, 0.11A.
    Could some help me out.
    Thanks.
    08-24-2024, 10:26 PM
  • marc_ytos
    latitude 5440 la-m401p password
    by marc_ytos
    Greetings, please can someone help me delete my bios password, please, latitud 5440 la-m401p service tag is B4QFSV3, please, I have already tried but I have not been successful....
    10-06-2023, 12:33 PM
  • ErinV
    MacBook Pro A1989 820-00850-A not powering on
    by ErinV
    Hey everyone!

    I have a MacBook Pro A1989 with a 820-00850-A board that recently stopped working. I used it overnight to charge my phone, in the morning it didn't turn on, I assumed flat battery but now won't charge and doesn't start at all.

    I have fully dissassembled it, when disconnected the battery reads at 0.012V. Even with the battery disconnected the laptop doesn't boot.

    The diode voltages around all 4 CD3215's seem fine.

    For all CD3215 (UB300, UB400, U3100 and U3200) I read just above 5V on PP20V_USBC_TA_VBUS, 3.3V on PP3V3UPC_TA_LDO, 1.8V...
    09-30-2024, 10:21 PM
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