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Badcaps Capacitor & Electronics Repair Forum

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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: 41,906

Last Post: New Members - please post your introductions here

236

41,906

New Members - please post your introductions here

by Actionkindaguy

Today, 09:22 AM

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: 32,698

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

3,185

32,698

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

by stj

Today, 02:48 AM

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: 74,838

Last Post: Thinkpad X390 Ram Upgrade

4,497

74,838

Thinkpad X390 Ram Upgrade

by duclong

Today, 07:43 AM

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: 3,973 Posts: 44,343

Last Post: EBC-X 8-Channels 18650 Battery Capacity Tester Charge & Discharge 10A Aging Test Modificatio

3,973

44,343

EBC-X 8-Channels 18650 Battery Capacity Tester Charge & Discharge 10A Aging Test Modificatio

by sam_sam_sam

Today, 06:19 AM

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: 6,814 Posts: 37,307

Last Post: HP ProDesk 400 G5 Bios

6,814

37,307

HP ProDesk 400 G5 Bios

by peste

Today, 09:11 AM

Sub-Forums:

BIOS & Schematic Requests! (2,683/16,291)

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: Boardview & Schematic Lenovo Ideapad Slim 7 ( NM-D231 )

31,889

304,220

Boardview & Schematic Lenovo Ideapad Slim 7 ( NM-D231 )

by Bonzas

Today, 07:57 AM

Sub-Forums:

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

Schematic Requests ONLY! (4,740/28,495)

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: 75,705

Last Post: IDEXX VetLab PN: 98-19386-00 .Lines on the screen

5,322

75,705

IDEXX VetLab PN: 98-19386-00 .Lines on the screen

by smaniak

05-04-2024, 12:46 AM

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: 27,453 Posts: 374,754

Last Post: Samsung ue49mu6120

27,453

374,754

Samsung ue49mu6120

by fanaticgames

Today, 09:52 AM

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: 65,233

Last Post: Fa180pm111 / dw5g3 dell psu

4,181

65,233

Fa180pm111 / dw5g3 dell psu

by harp

Yesterday, 05:48 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: 10,872

Last Post: playstation 5 digital firmware dump

1,002

10,872

playstation 5 digital firmware dump

by consolmania

05-04-2024, 02:59 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: 1,377 Posts: 19,393

Last Post: Recommend a decent Multimeter on the cheap

1,377

19,393

Recommend a decent Multimeter on the cheap

by aaronkatrini

Today, 09:54 AM

Mark Channels Read

Denon AVR 1912 no sound

by dansity

Hello,
As a foreword I'm relatively novice with component level audio gear repair. My amplifier stopped producing sound and I currently have no funds to buy a new one so I need any help to repair it. I know "no sound" is one of the most common problem but there were other symptoms so some of you seasoned repairman might able to pinpoint the stuff I have to check. I did download the service manual from manualslib the "no sound checklist" is a bit intimidating.

So i bought it working. First symptom: speaker protection relays on the audio board were clicking...

7 Photos
- Channel: Troubleshooting Audio Equipment
Today, 10:16 AM
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
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
MSI MEG Godlike x570 motherboard - need schematic and boardview, USB3 error

by Actionkindaguy

MSI MEG Godlike x570 motherboard - need schematic and boardview. I have accidentally plugged in the wrong usb plug into a usb3.0 connector on front panel of PC resulting in temporarily shorting out the port. (I know it was really stupid, It was dark in my room and was rushing). I shutdown the computer and now after an immediate restart I get an overcurrent error on boot up saying my PC will shut down in 15 seconds. If I let the computer sit for about 35 minutes, I then can boot the PC without getting error. What I am hoping to find out is what parts were affected by my stupidity. Anyone have any...
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Today, 09:41 AM
HP 14-dq0055dx - BIOS problem - "Pending Image Being Cleared" Loop

by grimacelord

Hello,

I have an HP 14-dq0055dx laptop here that came in for boot looping. It was previously taken to another shop and they tried flashing a BIOS firmware to the chip, so I cannot take an original dump. For a second or two, a message will come up on the screen that says:

This loop will go on for as long as you like. I let it run for about 12 hours and came in the following morning and it's still looping.

Motherboard model number: DA0PAMB46A1 REV: A
Secondary motherboard model number: 0PAB
SKU: 685K4UA

Attached is the latest...
- Channel: BIOS Requests ONLY!
04-30-2024, 09:11 AM
Boardview & Schematic Lenovo Ideapad Slim 7 ( NM-D231 )

by Bonzas

...
- Channel: Schematic Requests ONLY!
Today, 07:57 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
M1 A2338 screen and touchbar issues after cleaning up liquid damage

by jkruns

Hello everyone,

This is my first post after browsing this wonderful treasure trove of knowledge for many, many evenings. I've decided to learn how to fix these things, properly.

My patient is an A2338 Macbook Pro M1 (late 2020).

It had some corrosion around JT710 and JT700 caused by liquid spill, as well as against the protective barrier around the USB-C chips UF000 and UF100. So I took the main board out and cleaned it with a toothbrush and alcohol, then with alcohol in an ultrasonic cleaner. Cleaned the touchbar flex connectors as well. The board looks...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
04-22-2024, 06:45 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
Legion Y540 Bios Password Reset

by NootABoot

I created a supervisor password for my laptop a while back and I forgot it. It can't be reset by resetting CMOS. Can I extract it from a BIOS dump or through another method without a bios/eeprom programmer?
- Channel: BIOS Requests ONLY!
Yesterday, 09:10 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
Denon AVR 1912 no sound

by dansity

Hello,
As a foreword I'm relatively novice with component level audio gear repair. My amplifier stopped producing sound and I currently have no funds to buy a new one so I need any help to repair it. I know "no sound" is one of the most common problem but there were other symptoms so some of you seasoned repairman might able to pinpoint the stuff I have to check. I did download the service manual from manualslib the "no sound checklist" is a bit intimidating.

So i bought it working. First symptom: speaker protection relays on the audio board were clicking...

7 Photos
- Channel: Troubleshooting Audio Equipment
Today, 10:16 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
MSI MEG Godlike x570 motherboard - need schematic and boardview, USB3 error

by Actionkindaguy

MSI MEG Godlike x570 motherboard - need schematic and boardview. I have accidentally plugged in the wrong usb plug into a usb3.0 connector on front panel of PC resulting in temporarily shorting out the port. (I know it was really stupid, It was dark in my room and was rushing). I shutdown the computer and now after an immediate restart I get an overcurrent error on boot up saying my PC will shut down in 15 seconds. If I let the computer sit for about 35 minutes, I then can boot the PC without getting error. What I am hoping to find out is what parts were affected by my stupidity. Anyone have any...
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Today, 09:41 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
Boardview & Schematic Lenovo Ideapad Slim 7 ( NM-D231 )

by Bonzas

...
- Channel: Schematic Requests ONLY!
Today, 07:57 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
Legion Y540 Bios Password Reset

by NootABoot

I created a supervisor password for my laptop a while back and I forgot it. It can't be reset by resetting CMOS. Can I extract it from a BIOS dump or through another method without a bios/eeprom programmer?
- Channel: BIOS Requests ONLY!
Yesterday, 09:10 PM
Panasonic AG-1000B VHS player with bad picture quality

by FZG

Hello!

I recently got an old VHS player from Panasonic and just for fun I want to try to repair this device. It is an AG-1000B portable VHS player from 1990 and it has a problem with picture quality in playback mode.

Picture in playback mode is very noisy and often loses sync but the still images are nearly perfect.

I want to know, is this something that could be solved by recapping or is the video head likely gone?

Also, what mechanism is this?

Any feedback is appreciated!...
- Channel: Troubleshooting TVs and Video Sources
Today, 07:16 AM
UE55NU7170 Power Supply Circuit required BN4400932B

by alltvrepairs

Hi,

Anyone has a circuit diagram for this Samsung Power supply pls?
QP801CS shorted. Blu Cap is not cracked.

[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3265690}[/ATTACH]Hi,

Anyone has a circuit diagram for this Samsung Power supply pls?
QP801CS shorted. Blu Cap is not cracked.

[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image...
- Channel: Troubleshooting TVs and Video Sources
Today, 03:58 AM

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