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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: 730
45 730
Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
Topics: 234 Posts: 40,838
234 40,838
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: 0 Posts: 0
0 0
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: 3,166 Posts: 32,574
3,166 32,574
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: 4,487 Posts: 74,714
4,487 74,714
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.
Topics: 3,943 Posts: 44,096
Last Post: Mosfet Advice
3,943 44,096
Brendon@aa
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: 6,687 Posts: 36,648
6,687 36,648
mahlcom
by mahlcom
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: 498 Posts: 5,431
498 5,431
ay_erdi
by ay_erdi
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: 31,325 Posts: 296,951
31,325 296,951
Sub-Forums:
BIOS Requests ONLY! (12,492/148,618)
Schematic Requests ONLY! (4,648/27,931)
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: 5,302 Posts: 75,594
5,302 75,594
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: 27,356 Posts: 373,176
27,356 373,176
yokoono
by yokoono
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: 4,156 Posts: 65,040
4,156 65,040
Mustafa85
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: 299 Posts: 1,649
299 1,649
harp
by harp
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: 2,301 Posts: 27,286
Last Post: VSP-M1
2,301 27,286
Carm99
by Carm99
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: 213 Posts: 3,829
213 3,829
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: 980 Posts: 10,778
980 10,778
Paba
by Paba
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: 1,369 Posts: 19,301
Last Post: Trinoculars
1,369 19,301
Brendon@aa

What's Going On?

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There are currently 376701 users online. 4129 members and 372572 guests.

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

Badcaps Statistics

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Topics: 101,244   Posts: 1,257,590   Members: 485,189   Active Members: 16,949
Welcome to our newest member, ff57.

Latest Topics

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  • porfyriadhs
    Philips 50pus6503/12
    by porfyriadhs
    Hello to everyone. I have problem with the Philips 50pus6503\12. I have bacight but no picture . Tried removing ribbon cables, the left one then the right with no lunk. Then I tried to put some tape to cover the lines but nothing changed at all. Need help thanks
    03-09-2024, 01:55 AM
  • waterchill
    iPad Pro 12,9 1st Gen A1584 what part is this?
    by waterchill
    Hi, I'm wondering what part is this? Cannot find any schemaits or part number. The "+" can mean that this is a MAX chip I know it from Nintendo switch. It is located directly to the tristar chip....
    03-13-2024, 03:46 AM
  • tesnic
    HP Omen 15-ax014ns - Don't charge or discharge battery!!
    by tesnic
    Hi community! I've a strange case.. Laptop HP Omen 15-ax with 11,55V new battery that dont charge or discharge. The battery coil with the battery connected ia 12,25V. All mosfets seems ok, i verify dont exist any short.... The laptop power on OK, even only with battery but it dont charge. I verify the volatges on BQ738H and it seems ok....i read the [B]2.2.3. Low voltage on battery charging rail[/B]​ post, but i dont be able to found the issue... Any idea guys? Thanks a lot!!!!Hi community! I've a strange case.. Laptop HP Omen 15-ax with 11,55V new battery that dont charge or discharge. The battery...
    03-11-2024, 06:32 AM
  • Brendon@aa
    Trinoculars
    by Brendon@aa
    Can anyone point me to a review or suggest a good microscope or trinocular for a semi serious tech getting into SMD?

    have been watching Richard from Learn Electronics Repair and he recommended a trinocular simulfocal from Amazon

    I also saw a review from a guy that had his meter (think it was a fluke) display in his microscope lenses

    any tips appreciated !...
    Today, 02:35 AM
  • Brendon@aa
    Mosfet Advice
    by Brendon@aa
    Hi there - looking for a good mixed bag of mosfets to get started with and keep in my kit - there are several on Ali express - can anyone recommend a good mixed bag from there or anywhere else - I am doing all sorts of electronic repairs at a repair cafe thanks largely to Richard from “Learning Electronics Repair” videos

    Some relevant repairs to date where I’ve needed Fets are DC DC chargers, power supplies, (lots of plug packs) wind turbine controllers,

    thanks in advance ...
    Today, 02:30 AM
  • mahlcom
    FUJITSU CELSIUS H7510
    by mahlcom
    Hi
    i wanted to raise the BIOS chip to work puckup, but the operation did not work and I lost the BIOS content and now I need a dump for Fujitsu Celsius h7510. It is worth noting that:
    fujitsu celsius H7510
    motherboard: WSAR_N19P
    Model:7h15a1
    S/N :800330-01R1100047​
    03-14-2024, 04:21 AM
  • porfyriadhs
    Vestel 17mb230 mainboard.No Sound
    by porfyriadhs
    Hello to everyone . I have a vestel mainboard 17mb230 with no sound on the speakers only on the headphones . I think that hotel mode is on but I cant find a way to fix .. Any help will be good thanks
    Today, 01:12 AM
  • johnnys25s
    ASRock B560 Pro4 doesn't start
    by johnnys25s
    Hy there.
    I have a ASRock b560 Pro4 MoBo that doesn't power up anymore after CPU swap. I used (my) CPU to test another (broken) board and after put it back, my board doesn't start. I've tested that CPU again but it's ok. I even bought another one for testing. I also have 2 PSU for tests. NO bent pins and no mechanical damage.
    I have different voltages on the board (in some places) but it doesn't start, at all.
    I have the schematic but I don't know what to do exactly with it. I have some skills and I can measure things. I need help to try to repair it. Thank you.
    02-28-2024, 11:37 AM
  • jamesp
    Lenovo laptop dead motherboard GS752 NM-C781rev. 1.0 2019-11-25 inscribed at the pcb,
    by jamesp
    I have a dead laptop with mainboard model GS452/552/752 nm-c781 rev 1.0, i have initiated troubleshooting with the use of digital multimeter. checked voltage signals up to PM_SLP_S3#, found out that before PM_SLP_S3# signal , a PBTN_OUT#_R signal has 3.2 volt state and after pressing power on, PBTN_OUT#, It drops to logic level zero for around 12 secs and then back again to 3.2v for 6 secs. it will loop like that until you pulled out the adapter power. during loop the PM_SLP_S3 and S4 SIGNAL has no output. (0 volt ) may i ask for help to anyone with this kind of board and same kind of problem....
    Yesterday, 08:17 AM
  • EazyBone
    Un50cu7000 2 blink oddity *partially solved
    by EazyBone
    I write this to maybe help another with this TV.

    So I aquired this TV a 2023 model. It started the 2 blink reboot problem which indicates bad panel. It was still under warranty and the repair man came by.

    The Samsung repairman brought a brand new panel and switched my original boards to the new panel. The new panel then had the 2 blink error code. The repair guy said he has seen this and the MAIN board on this model will cause the 2 blink. He then replaced the main/power board (they are both connected) and put it back onto my original panel. Voila it worked.
    ...
    Yesterday, 10:24 PM

Trending

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  • porfyriadhs
    Vestel 17mb230 mainboard.No Sound
    by porfyriadhs
    Hello to everyone . I have a vestel mainboard 17mb230 with no sound on the speakers only on the headphones . I think that hotel mode is on but I cant find a way to fix .. Any help will be good thanks
    Today, 01:12 AM
  • Brendon@aa
    Trinoculars
    by Brendon@aa
    Can anyone point me to a review or suggest a good microscope or trinocular for a semi serious tech getting into SMD?

    have been watching Richard from Learn Electronics Repair and he recommended a trinocular simulfocal from Amazon

    I also saw a review from a guy that had his meter (think it was a fluke) display in his microscope lenses

    any tips appreciated !...
    Today, 02:35 AM
  • Brendon@aa
    Mosfet Advice
    by Brendon@aa
    Hi there - looking for a good mixed bag of mosfets to get started with and keep in my kit - there are several on Ali express - can anyone recommend a good mixed bag from there or anywhere else - I am doing all sorts of electronic repairs at a repair cafe thanks largely to Richard from “Learning Electronics Repair” videos

    Some relevant repairs to date where I’ve needed Fets are DC DC chargers, power supplies, (lots of plug packs) wind turbine controllers,

    thanks in advance ...
    Today, 02:30 AM
  • Maxpower3
    Lenovo Thinkpad Ec Pwd Bypass
    by Maxpower3
    Hello everyone.

    Here is the bypass solution for several Lenovo ECs.
    This has worked on many ECs.
    Only works if password is contained in EC

    I succeeded on many models
    [URL="https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/104872-lenovo-l15-gen-2-ryzen-password-removal-w-vertyanov-successor?p=3217086#post3217086"]https://www.badcaps.net/forum/troubl...86#post3217086[/URL]
    [URL="https://www.youtube.com/channel/UCeF58jC2Bt_adKcguvynjeA"]https://www.youtube.com/channel/UCeF...t_adKcguvynjeA[/URL]...
    03-17-2024, 11:57 AM
  • mikay786
    Why are there two inputs mosfets?
    by mikay786
    Just trying to fix this old Alienware m14x laptop.

    found a shorted capacitor and a shorted mosfet on the input mosfet pair.

    im i newish to this and was wondering why you almost always have a pair of identical mosfets on in the input? They both do the same thing so what the point?

    also on a side note i am eager to test laptop since no short now, is there a way to bypass the 2nd mosfet for a temporary solution until replacement arrives?...
    Yesterday, 06:51 PM
  • bigboots
    Lenovo E490
    by bigboots
    Hi all.
    Need some info how to correct UUID tried u1 tools but keep getting error.
    Invalid configuration information area.
    Failed to write the configuration to EEPROM
    Current brand name is: Target block dose not exist.

    Tried the norm initialise EEPROM etc.
    Thanks in advance....
    Yesterday, 04:00 AM
  • Marek011
    Macbook pro 13 A1708 Low voltage on bios chip
    by Marek011
    Hi, While trying to unsolder the BIOS chip, I accidentally blew out the R6130 capacitor and now I'm wondering what kind of capacitor it is because I don't know which one to buy. Getting to the point. The Mac draws 20v and 0.330A and does not turn on, it is dead. On pin 8 of the BIOS chip (U6100), the meter shows only 1v and then drops to 0v. After connecting the USB tester to the board itself (with all ribbons disconnected), the board consumes 5V and 0.024A

    Where could the problem be?​
    Yesterday, 09:37 AM
  • Azy
    Haier Y11B Dump
    by Azy
    Hey. i recently got my bios flashed from a repair shop on this laptop and now there is a long delay before it posts/ shows the boot screen. If someone could help me with this, it would be very much appreciated. Do let me know if I need to post any other details for it. the bios dump will be attached below....
    Yesterday, 10:17 AM
  • Cuboy
    HP probook 4510s mosfet issue
    by Cuboy
    Hello,

    I am currently trying to help a ONG by volunteering to help repair laptops, it's something that i have been into since 2017, always watching videos, on discords, forums etc...

    I have an HP ProBook 4510s laptop that does not power on and has no indicator lights, which suggests an issue with the power supply or the motherboard.

    I started by verifying that there is voltage at the input of the motherboard, confirming that the power adapter is working correctly. However, when I checked the voltage at the output of the first MOSFET (Q1032), I found 19V at...
    03-16-2024, 10:29 AM
  • Khoja
    LG 16T90P-K.AAB7UI bios need
    by Khoja
    Hello dear forum members. Laptop LG 16T90P-K.AAB7U (DA0NLHMBAE0 Rev. E) no display image. It turns on but there is no image on the screen. I've checked some and there is 3,3V and 5V all good. No mechanic defects were detected, so I decided first of all to programme the BIOS.
    Yesterday, 05:13 AM
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