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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: 236 Posts: 42,238
236 42,238
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
1 4
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: 3,190 Posts: 32,711
3,190 32,711
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: 4,503 Posts: 74,874
4,503 74,874
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: 3,984 Posts: 44,455
3,984 44,455
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: 6,856 Posts: 37,513
6,856 37,513
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: 501 Posts: 5,455
501 5,455
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: 32,096 Posts: 306,680
32,096 306,680
Sub-Forums:
BIOS Requests ONLY! (12,802/154,768)
Schematic Requests ONLY! (4,780/28,680)
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: 5,328 Posts: 75,729
5,328 75,729
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: 27,480 Posts: 375,110
27,480 375,110
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: 4,190 Posts: 65,290
4,190 65,290
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: 304 Posts: 1,675
304 1,675
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: 2,336 Posts: 27,567
2,336 27,567
Evets
by Evets
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: 227 Posts: 3,952
227 3,952
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: 1,008 Posts: 10,913
1,008 10,913
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: 1,381 Posts: 19,455
1,381 19,455

What's Going On?

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There are currently 403212 users online. 4109 members and 399103 guests.

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

Badcaps Statistics

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Topics: 102,628   Posts: 1,273,588   Members: 495,711   Active Members: 16,803
Welcome to our newest member, kannesfr.

Latest Topics

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  • kinsale11
    Samsung XE930QCA Schematic Request
    by kinsale11
    If anyone can supply anything for this board I would be extremely grateful! Thanks!...
    Today, 04:29 PM
  • wetpretzel2
    Lenovo think book 14s G2 ITL board view
    by wetpretzel2
    Can I please get a board view for this model?
    Today, 06:43 PM
  • vincelx
    A1502 820-3476 no SMC_S4_WAKESRC_EN
    by vincelx
    Hi,
    This board has slight water damages. No fan spin.
    When I power on, I got:
    PM_SLP_S4_L
    PM_SLP_S5_L
    PM_SLP_S3_L
    ALL_SYS_PWRGD
    all go to 3.3V, then back to 0V after 1s
    PP5V_S5=5V
    PP3V3_S5=3.3V
    SMC_S4_WAKESRC_EN remains at 0V.
    With SMC bypass, fan spins full speed.
    Can you help on troubleshooting SMC_S4_WAKESRC_EN missing?...
    Today, 09:37 AM
  • CraigR
    12v PSU help please.
    by CraigR
    I have a 12v psu from a DJ lighting system and I can not seem to figure this one out. The board so far had a blown fuse and a shorted voltage regulator. After replacing those I get 12v out but hooking a load to it the voltage seems to bounce between 5v and 0v. I remove all the caps and checked those and replaced 2 that were only questionable. I know it's not the device I connect it to as I put 12v to it with my bench power source and it works fine....
    05-07-2024, 02:25 PM
  • rxfxel
    Lenovo 14ALC05 - Lost Supervisor Password
    by rxfxel
    Hello everyone, so i don't remember setting up a supervisor password but i have one, and i don't know it. And made it worse...

    I have a Lenovo IdeaPad Flex 5 14ALC05 Type 82HU and I wanted to dual-boot linux and windows, that's when i tried to access my bios to change the boot order and saw that it prompted me to enter a password to access. I tried 3 times, no codes, only a message saying it's locked and that i have to reboot and try again.

    So what i did was, dump my current bios bin file with a CH341A programmer, got a clean bin file for my laptop from this forum and...
    Today, 04:02 PM
  • Belmoto
    Asmedia ASW1142 usb 3.1/C not working properly on msi z170a m7
    by Belmoto
    Hi there,

    Recently I had a problem with my msi z170a m7 mobo usb c/3.1 port,

    The port connects normally but when I transfer data it transfers with full speed (from the pc to the device I'm sending to) but it does not receive with the same speed, to make it simpler, if I plugged a wifi adapter to it, I can upload with full speed but I can't download with the same speed, but if I connected the adapter to different port it downloads at full speed.

    I'm not sure if it's a HW problem or a SW one,

    I have MSI z170a m7, with modded bios to install coffee...
    Today, 03:06 PM
  • victor-r
    Samsung Monitor Ls22A300B Rom
    by victor-r
    Samsung Monitor Ls22A300B , Please, I need the Bios file that works for this monitor.
    thanks​
    Yesterday, 10:49 AM
  • sauce
    A2289 won't power on
    by sauce
    Hi,

    I bought a faulty A2289 for myself.

    The USB-C meter was stuck on 5V.

    After remove the board the U3100 was corroded and also around but quite light.

    So I clean the U3100 and see R2834 in bad condition and its value was not good.
    I replace it and not the USB-C meter shows 20V, the fan is spinning, CPU is hot but nothing else no picture.

    The USB-C meters shows a very low current with all connected. It starts at 20v few mA and then stays at 20v 100mA.

    How mush current the board is supposed to take without nothing...
    Yesterday, 12:20 AM
  • YellowJacket
    Gigabyte GB-BXBT-1900
    by YellowJacket
    Greetings, everyone!

    Would need some help with this mini PC, the issue is - after turning on, PC starts, but there is no picture on the screen, no reaction on LED in external keyboard. Tested with another known good RAM. All voltages are present. Looks like BIOS issue to me, right? I tried binary from this site --> [URL]https://www.gigabyte.com/Mini-PcBarebone/GB-BXBT-1900-rev-10/support#support-dl-bios[/URL] ( version F9 ), but still same behavior. Note, I flashed only BIN file from that archive. Although, it says "1.0" in the linked site, but I have board with 1.1 revision....
    05-17-2024, 10:17 PM
  • ianbak
    BQ24735 Problem (HP 255 G8)
    by ianbak
    Hi,

    I have an HP 255 G8 that runs for as long as its battery holds charge but won't accept AC power.

    I have partially diagnosed the problem and the issue seems to be that there is no ACDRV output from the BQ24735 to turn on the two input MOSFETs. The 24735 has a VCC of 19.57 V, the ACDET input is at 2.93 V and the REGN 6V LDO is outputting 5.98 V, so everything looks good - but ACDRV is stuck at 28 mV.

    I've already replaced the 24735 and both input MOSFETs and nothing has changed.

    I'd appreciate some suiggestions as to what to try next.
    Today, 08:45 AM

Trending

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  • ianbak
    BQ24735 Problem (HP 255 G8)
    by ianbak
    Hi,

    I have an HP 255 G8 that runs for as long as its battery holds charge but won't accept AC power.

    I have partially diagnosed the problem and the issue seems to be that there is no ACDRV output from the BQ24735 to turn on the two input MOSFETs. The 24735 has a VCC of 19.57 V, the ACDET input is at 2.93 V and the REGN 6V LDO is outputting 5.98 V, so everything looks good - but ACDRV is stuck at 28 mV.

    I've already replaced the 24735 and both input MOSFETs and nothing has changed.

    I'd appreciate some suiggestions as to what to try next.
    Today, 08:45 AM
  • kinsale11
    Samsung XE930QCA Schematic Request
    by kinsale11
    If anyone can supply anything for this board I would be extremely grateful! Thanks!...
    Today, 04:29 PM
  • danito
    Dell Latitude 5590 autopilot
    by danito
    Dell Latitude 5590 ST FH1MNQ2
    DDM80 LA-F411P REV 1
    pwb mp3pg rev A00
    Can you help me?
    Thx...
    Today, 04:37 AM
  • matheus30
    Where Can I Buy good Macbook Inductors/Coils? I have broken one :(
    by matheus30
    When I took it out it broke, and I want to get the same one or one of good quality.
    Where can I buy it? On AliExpress they do not indicate the maximum amperages, and on Mouser or TME.EU it is impossible to search without having the exact reference.

    Inductor needed:
    It is the PP5V_G3S Coil of an A2159, 820-01598 (L7670)
    On the front it says: 1R5

    and in the schematic:

    1.5UH - 20% - 12.5A - 0.017Ohm
    PIMB062D-SM
    152S00268

    Can someone tell me where to buy it?

    Thank you so much.​
    Today, 11:44 AM
  • wetpretzel2
    Lenovo think book 14s G2 ITL board view
    by wetpretzel2
    Can I please get a board view for this model?
    Today, 06:43 PM
  • Belmoto
    Asmedia ASW1142 usb 3.1/C not working properly on msi z170a m7
    by Belmoto
    Hi there,

    Recently I had a problem with my msi z170a m7 mobo usb c/3.1 port,

    The port connects normally but when I transfer data it transfers with full speed (from the pc to the device I'm sending to) but it does not receive with the same speed, to make it simpler, if I plugged a wifi adapter to it, I can upload with full speed but I can't download with the same speed, but if I connected the adapter to different port it downloads at full speed.

    I'm not sure if it's a HW problem or a SW one,

    I have MSI z170a m7, with modded bios to install coffee...
    Today, 03:06 PM
  • thesame
    GPS Navigon A12XL not charging.
    by thesame
    The unit had a battery replacement , it used to work with a 2200 mah battery that i have found swollen, i have replaced it with a 1500 mah battery( i couldn't find one available at 2200mAh), tested working, after 2 months of beeing used in the car always plugged to the charger the owner sayed that it's not charging, the battery had 3.3 v instead of 3.7 , i have installed a new battery of 1500mAh, the unit powers on , shows 1% battery and it only draws current when the display is on and only shows the charging icon when i first plug the cable in then it stops after 10 or 20 seconds,and if i turn...
    Today, 06:18 AM
  • Olles4
    Welder not turning on - Learning
    by Olles4
    Hello people. I trying to repair my welding machine oerlikon citomig 180mp hpf and there is a little board with blown stuff.The problem is i cant identify the value of the blown resistor and diode. Any suggestion?
    05-18-2024, 01:22 PM
  • kingblade20
    ASUS M3401QA BIOS request
    by kingblade20
    Hi,

    My M3401QA does not power on properly: no display (all black) and with white LED charging port blinking slowly (once every ~3 seconds).
    Checked several points across the board and supplies are up and running but I need to double check when I get schematic.
    Result is still the same even with DC jack inserted and battery connector removed.

    Tried flashing the latest BIOS as of this date to no avail which I suspect has something to do with DMI but tools could not run properly on my machine and couldn't find manual copy of DMI through hex editor and not sure...
    Today, 11:28 AM
  • mustangank
    Casper F650 bios
    by mustangank
    casper f650 f15kr_dsc rev 2.0

    bios file not working;...
    Today, 04:13 AM
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