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Badcaps Capacitor & Electronics Repair Forum

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All new members, PLEASE READ HERE FIRST! Posting only allowed by established members.

Topics: 45 Posts: 733

Last Post: What's the ideal operating temp for capacitors?

733

What's the ideal operating temp for capacitors?

by Thermaltake

04-16-2024, 04:04 AM

Announcements & Related News

Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!

Topics: 236 Posts: 41,912

Last Post: New Members - please post your introductions here

236

41,912

New Members - please post your introductions here

by mouhcine latrache

Today, 02:58 PM

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

ncp81208 datasheet

by BAKEEL1990

05-01-2024, 05:24 AM

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: 3,185 Posts: 32,699

Last Post: Help Identifying a Tantalum Capactior!!!!! 68 C79 Please help!!

3,185

32,699

Help Identifying a Tantalum Capactior!!!!! 68 C79 Please help!!

by redwire

Today, 02:15 PM

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: 4,497 Posts: 74,844

Last Post: ISP blocking emails now?

4,497

74,844

ISP blocking emails now?

by CapLeaker

Today, 04:04 PM

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: 3,974 Posts: 44,348

Last Post: Looking for a solderless breadboard that is not trash

3,974

44,348

Looking for a solderless breadboard that is not trash

by momaka

Today, 12:20 PM

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: 6,816 Posts: 37,320

Last Post: dell vostro 3910 bios dump needed

6,816

37,320

dell vostro 3910 bios dump needed

by apologized

Today, 02:41 PM

Sub-Forums:

BIOS & Schematic Requests! (2,684/16,295)

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: 5,444

Last Post: Help Identifying ASUS ROG Rapture GT-AXE16000 Board Components

501

5,444

Help Identifying ASUS ROG Rapture GT-AXE16000 Board Components

by kujoswrath

04-30-2024, 02:21 PM

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: 31,889 Posts: 304,220

Last Post: Dell latitude 3190 2-in-1 LA-F461P boardview & schematics

31,889

304,220

Dell latitude 3190 2-in-1 LA-F461P boardview & schematics

by IlkerD75

Today, 01:24 PM

Sub-Forums:

BIOS Requests ONLY! (12,703/153,213)

Schematic Requests ONLY! (4,740/28,497)

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: 5,322 Posts: 75,706

Last Post: Asus VG278 mosfet identification ?

5,322

75,706

Asus VG278 mosfet identification ?

by momaka

Today, 12:50 PM

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: 27,454 Posts: 374,764

Last Post: What is this component

27,454

374,764

What is this component

by Diah

Today, 03:58 PM

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: 4,181 Posts: 65,235

Last Post: Seasonic X660 not turning on when PC is in sleep mode

4,181

65,235

Seasonic X660 not turning on when PC is in sleep mode

by momaka

Today, 12:45 PM

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: 301 Posts: 1,665

Last Post: Epson l3110 dump

301

1,665

Epson l3110 dump

by hardwaretaj

04-28-2024, 05:52 AM

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: 2,326 Posts: 27,461

Last Post: Denon AVR 1912 no sound

2,326

27,461

Denon AVR 1912 no sound

by dansity

Today, 10:16 AM

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: 223 Posts: 3,909

Last Post: Eneloop/Panasonic BQ-CC63 charger - noisy PWM IC

223

3,909

Eneloop/Panasonic BQ-CC63 charger - noisy PWM IC

by redwire

Yesterday, 10:18 PM

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: 1,002 Posts: 10,873

Last Post: Monster Power HTS 5100 MKII Power Center

1,002

10,873

Monster Power HTS 5100 MKII Power Center

by momaka

Today, 12:34 PM

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: 1,378 Posts: 19,398

Last Post: anyone recommend an earth leakage clamp meter ?

1,378

19,398

anyone recommend an earth leakage clamp meter ?

by redwire

Today, 02:28 PM

Mark Channels Read

ISP blocking emails now?

by CapLeaker

Got something new. Recently I got trouble with receiving emails and syncing OneNote. Nothing else. I still can stream 24x7, VOIP, have full speed internet, but in the world cannot receive any emails nor sync OneNote. Take the computer somewhere else to a different internet location and no problems at all. Points to the router, right? NOPE! Hooked up my computer directly to the modem (which is in bridge mode) and have the same problems! Put all the network shit back together, start my VPN provider app, choose the closed VPN server to me and all the problems are gone! Is...
- Channel: General Computer & Tech Discussion
Yesterday, 06:16 AM
unlock BIOS unowhy Y13 2021

by atmega4

please i need unlock BIOS unowhy Y13 2021
Production year : Aout 2021
Model : Y13G011S4EI
Motherboard : EM_IG116_200b_ene_F_V1.0...
- Channel: BIOS Requests ONLY!
Today, 03:59 PM
What is this component

by EazyBone

Shown in picture, trying to replace a MOSFET and looks like I knocked this off, in guessing it's the same as one next to it. Has 1.8 Mohms. Any way to bypass it? It's on the hot side

The component circled is the one there, the arrow is I think another of same component?

2 Photos
- Channel: Troubleshooting TVs and Video Sources
Today, 11:47 AM
JVC lt-32hg35e (Vestel) blinking LED

by unimatrix93

Dear forum,

I'm stuck with this old TV unit.
PSU: 17PW04-1
MB: 17MB62-1
Symptoms:
- Blue LED constantly blinking when connected to AC.
- Only sigh of life is beeping when touching the capactive buttons on the front.

Diagnostics so far:
Checked the PSU output voltages:
12V present
5V present altought its only around 4.2V
3V is present measured 3.4V.

I check TP 202 which is for the short circuit protection: 0.606V on diode mode

Since I met with some vestel models before with similiar symptoms...
- Channel: Troubleshooting TVs and Video Sources
05-03-2024, 03:18 AM
BIOS password removal for Asus FA707NU-DS74

by trepachka

Hello, this Asus laptop model FA707NU-DS74 has password which prevents computer from booting past it.

S/N: R3NRCX04A476126

I extracted current BIOS from a chip XMC 25RU256CXIQ (1.8V) sitting close to the CPU heatsink.

Please, help me remove the password. Thank you....
- Channel: BIOS Requests ONLY!
Today, 01:30 AM
Ipad Pro A1652 12.9" Schematic + Board View needed 820-00301-A

by Mogli1476

Hey @all,

my ipad Pro dont want to work anymore. I measured the incoming amps which is approx. 0.5A. Then I changed the Tristar IC and blow out some parts near this IC. Now I want to find the missing parts. Thats why i´m asking for the schematics & board view for this ipad pro.

Thank for your help!

Best regards, Mike
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 03:15 PM
Lenovo t470 Bad pathway

by lofton

Hello, I was updating the bios on my t470 20jn pf1q6dx5 using the soic8 clip that came with the Ch341A on the bios and pressed the clip too far back when i was taking it out and it knocked off what look like little capacitors, can this be repaired or bypassed with solder or a wire or what was originally on there, they are extremely small. I have attached two pictures, one with the capacitors on and one with them off. It took me weeks to figure out why the board wouldn't power on. I thought I had broke the bios. THe machine turns on for a second then turns off.

[ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"632","title":"Broke...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 03:14 AM
anyone recommend an earth leakage clamp meter ?

by petehall347

have been looking at earth leakage clamp meters and its like a minefield out there . i wondered if anyone here had bought one that actually works properly ?...
- Channel: Equipment Usage, Soldering, Techniques, and Reviews
04-17-2024, 01:31 PM
Help Identifying a Tantalum Capactior!!!!! 68 C79 Please help!!

by jrutla2

Hello BadCaps Forum! I'm new to the group and hope you guys can help me with something. I have a 2017 Apple imac A1419 board # 820-00609-A that i'm trying to identify a capacitor failure on. The capacitor is a tantalum 68 C79. See pic attached. I've tried to figure this out using the web and unfortunately can't find the information. Can someone tell me what the Capacitance value, voltage, etc is for these 68 C79 caps are? Where could i pick up a replacement? Thanks in advance!!...
- Channel: General Capacitor Questions & Issues
05-03-2024, 04:00 PM
Recommend a decent Multimeter on the cheap

by aaronkatrini

Hi all,

I was looking to upgrade my main multimeter (Asita MD591) with something that has more features. I'll use it mostly for board diagnostic and diy repairs. I've been eyeing out many of those multi-function ones from Aliexpress but can't seem to make my mind up. Here are the features that I'm looking after:

- Autorange
- DC volts up to 30V
- Accurate Resistance
- Diode test (Beep mode)
- Frequency up to 200MHz
- Capacitanze up to 5000uF
- as cheap as possible

Other functions are not needed but those which are needed...
- Channel: Equipment Usage, Soldering, Techniques, and Reviews
Today, 09:54 AM

please help friend's thinkpad T480 NM-b501 dead, VSYS_OUT 9.2v, thank you

by fredyjbi

Please help sir, this board does not turn on because VSYS_OUT is 9.2v, I compared it with a normal board VSYS_OUT is 10.2v, I have replaced the PQ101 and PQ102 mosfet and BQ 25700 which is known to be good, but the results are still the same, thank you

VSYS_OUT 9.2v
Meter in resistance mode auto range 6M ohm ok

NORMAL BOARD VSYS_OUT 10.2V

PQ101
PIN 2 20V
PIN 7 0.004V
PIN 6 6V
PIN 5678 0V

PQ102
PIN 567 0V
PIN 9 0.004V
PIN 234 9.2V (VSYS_OUT)

PU101 BQ25700ARSNR
1 VBUS 20V...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 10:48 AM
What is this component

by EazyBone

Shown in picture, trying to replace a MOSFET and looks like I knocked this off, in guessing it's the same as one next to it. Has 1.8 Mohms. Any way to bypass it? It's on the hot side

The component circled is the one there, the arrow is I think another of same component?

2 Photos
- Channel: Troubleshooting TVs and Video Sources
Today, 11:47 AM
Recommend a decent Multimeter on the cheap

by aaronkatrini

Hi all,

I was looking to upgrade my main multimeter (Asita MD591) with something that has more features. I'll use it mostly for board diagnostic and diy repairs. I've been eyeing out many of those multi-function ones from Aliexpress but can't seem to make my mind up. Here are the features that I'm looking after:

- Autorange
- DC volts up to 30V
- Accurate Resistance
- Diode test (Beep mode)
- Frequency up to 200MHz
- Capacitanze up to 5000uF
- as cheap as possible

Other functions are not needed but those which are needed...
- Channel: Equipment Usage, Soldering, Techniques, and Reviews
Today, 09:54 AM
CH341A programmer can't erase chip!

by rostomzerrougui

i want to program a W25Q40CL chip but looks like it won't get erased neither programmed
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3265889}[/ATTACH]
Any help ?i want to program a W25Q40CL chip but looks like it won't get erased neither programmed
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3265889}[/ATTACH]
Any help ?...
- Channel: General Electronics Technical Discussion
Today, 10:40 AM
unlock BIOS unowhy Y13 2021

by atmega4

please i need unlock BIOS unowhy Y13 2021
Production year : Aout 2021
Model : Y13G011S4EI
Motherboard : EM_IG116_200b_ene_F_V1.0...
- Channel: BIOS Requests ONLY!
Today, 03:59 PM
Ipad Pro A1652 12.9" Schematic + Board View needed 820-00301-A

by Mogli1476

Hey @all,

my ipad Pro dont want to work anymore. I measured the incoming amps which is approx. 0.5A. Then I changed the Tristar IC and blow out some parts near this IC. Now I want to find the missing parts. Thats why i´m asking for the schematics & board view for this ipad pro.

Thank for your help!

Best regards, Mike
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 03:15 PM
Quecoo T12-958 soldering station - INVER error?

by spleenharvester

I bought a T12-958 recently with an M8 handle and until now it has worked very well. The tip wasn't earthed but that was easily resolved.

Now, whenever it is switched on, it heats up to about 70*C then shows an [INVER] error on the screen and stops. In order to fix it I have to either unplug and re-plug the handle, or unplug and re-insert the tip from the handle. While doing that it changes to [ERROR], then it finishes heating up and works perfectly. Until it's turned off, after which it will show [INVER] again next time it is turned on.

Any idea what the problem is?
- Channel: Equipment Usage, Soldering, Techniques, and Reviews
Today, 01:36 PM
Laptop Aspire one 1-132 Model AO1-132

by aminsab

bios for laptop model: Aspire one 1-132

snid: 62504891276

probleme : error: turn on but not boot even to the logo

Thank You...
- Channel: BIOS Requests ONLY!
Today, 02:26 AM
HP Elitebook 2540p - WP884AW#ABU - won't start!

by smaniak

The laptop won't start. When plug power supply, on 19V in gives me 0,14A, without turning on the laptop.
I check it with thermal camera, and there is one resistor that is very hot, I change the resistor with new on but the result is the same.
In the attachment there is schematic of the resistor area, and schematic of the laptop.
I can't understand, why this resistor is getting so hot....
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 01:24 AM
polaroid TQLHD24PR004 no power

by crazycavan

polaroid TQLHD24PR004 no power
hi, my tv no longer starts like dead, no standby led

motherboard : MS36639-ZC01-01
panel : V236BJ1-P01
flash spi: GD25Q64
need usb firmware or to reprogram
- Channel: Troubleshooting TVs and Video Sources
Yesterday, 08:40 AM

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