Badcaps Electronics Repair Forum & Schematic Search

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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: 235 Posts: 41,711

Last Post: New Members - please post your introductions here

235

41,711

New Members - please post your introductions here

by nuggy

Today, 11:59 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: 3

Last Post: ncp81208 datasheet

ncp81208 datasheet

by xaruqui

03-27-2024, 12:27 PM

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: 3,183 Posts: 32,688

Last Post: Assistance with identifying replacement caps on ASUS P5VDZ-MX

3,183

32,688

Assistance with identifying replacement caps on ASUS P5VDZ-MX

by ChaosLegionnaire

Today, 11:04 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: 4,493 Posts: 74,812

Last Post: Evaluating Mechanical Hard Drives SMART Data in Linux (Ubuntu) Using the Disks Utility.

4,493

74,812

Evaluating Mechanical Hard Drives SMART Data in Linux (Ubuntu) Using the Disks Utility.

by abajor

Yesterday, 05:14 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: 3,964 Posts: 44,283

Last Post: TRIAC circuit

3,964

44,283

TRIAC circuit

by harp

Today, 04:35 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: 6,798 Posts: 37,215

Last Post: hp elitedesk 800 g4 sff

6,798

37,215

hp elitedesk 800 g4 sff

by hoaca388

Today, 04:58 AM

Sub-Forums:

BIOS & Schematic Requests! (2,673/16,228)

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: 500 Posts: 5,437

Last Post: Fortinet 50E Slowing down internet throughput

500

5,437

Fortinet 50E Slowing down internet throughput

by rogfanther

Yesterday, 11:49 AM

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: 31,779 Posts: 302,838

Last Post: HP Laptop 15s-fq***** DA0P5HMB8I0 REV I

31,779

302,838

HP Laptop 15s-fq***** DA0P5HMB8I0 REV I

by lapzlapz

Today, 03:14 AM

Sub-Forums:

BIOS Requests ONLY! (12,661/152,381)

Schematic Requests ONLY! (4,720/28,377)

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: 5,319 Posts: 75,683

Last Post: Asus VG278 mosfet identification ?

5,319

75,683

Asus VG278 mosfet identification ?

by guizmo1967

Today, 12:27 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: 27,433 Posts: 374,510

Last Post: Can I fit a UE49MU6470 Diffuser into a UE49NU7100K?

27,433

374,510

Can I fit a UE49MU6470 Diffuser into a UE49NU7100K?

by fuus

Today, 12:23 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: 4,178 Posts: 65,204

Last Post: Corsair HX620W - dead APFC MOSFET

4,178

65,204

Corsair HX620W - dead APFC MOSFET

by ndarjo21

Today, 01:26 AM

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: 1,664

Last Post: NEED key for Epson WF-c5790

301

1,664

NEED key for Epson WF-c5790

by Morrisohbig

04-25-2024, 12:05 PM

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: 2,317 Posts: 27,423

Last Post: faulty loudspeaker amplifier-no sound output

2,317

27,423

faulty loudspeaker amplifier-no sound output

by kasfamily

Yesterday, 09:18 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: 3,897

Last Post: Saeco SG200E Coffee Machine

223

3,897

Saeco SG200E Coffee Machine

by mon2

04-25-2024, 10:24 AM

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: 998 Posts: 10,862

Last Post: Post your worthless and/or pointless repairs

998

10,862

Post your worthless and/or pointless repairs

by прямо

Yesterday, 09:45 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: 1,375 Posts: 19,369

Last Post: recommend good solder wick on aliexpress

1,375

19,369

recommend good solder wick on aliexpress

by redbaron1007

Yesterday, 06:01 PM

Mark Channels Read

Asus VG278 mosfet identification ?

by guizmo1967

Hello,

My Asus monitor stop working today !! I found the problem on the main board, the power supply board is ok. It's Q9, a mosfet but I have no idea what are the specs since I don't have the schematic for that monitor !!

Can someone help me identified this mosfet ?

Thank you !

1 Photo
- Channel: Troubleshooting Computer Displays
04-16-2024, 01:15 PM
need help with g513rc... not sure where to start, maybe a bios dump?

by tnap1979

my g513rc was doing a windows update and it had a bios update in it, the system rebooted, was doing something rebooted again, and hasnt functioned properly since..
ive researched reparing my bios, i have a ch341a black with 1.8v adapter, ive made 4 seperate dumps at different times for redundancy...
i have a feeling my bios is corrupted and preventing my system from booting..
does anyone have a g513rc bios dump i can test ???
or is anyone willing to help me out in another section with fixing my dumps ??
- Channel: BIOS Requests ONLY!
Today, 11:48 AM
Can I fit a UE49MU6470 Diffuser into a UE49NU7100K?

by fuus

Evening all,

Long time no post!

I have a UE49NU7100K here with the classic melted diffuser and damaged backlight from getting too hot. Locally there is a UE49MU6470 available which I could pick up to replace the melted diffuser. Would this work or am I missing something? They look like the same style of backlight.

If this sounds good, where is the best place to buy a new backlight? Will I regret buying from Aliexpress?

Thanks in advance for any help
- Channel: Troubleshooting TVs and Video Sources
04-04-2024, 03:34 PM
How do you trim a BIOS file?

by survivalbloke

I downloaded a BIOS file from Lenovo and once I extracted the actual BIOS from the executable, it is 16MB in size, but my IC(Winbond 25Q80DV) is only 8MB in capacity. I have read you can trim the BIOS file with a hex editor but I can't find any instructions on specifically what you will remove.
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 10:55 AM
TRIAC circuit

by прямо

Anyone is familiar with a TRIAC circuit?

I came across this schematic, and I built it, but I can't seem to figure it out why I'm getting a low AC voltage output at the TRIAC terminals.

With 230V AC hot side at the TRIAC MT2, I measured 60V AC between MT1 and neutral side when the comparator output LED indicator is on, and 20V AC when it is off.

Same result if 230V AC hot side is at MT1, and I measured between MT2 and neutral side.

My heating element doesn't work with 60V AC. It's not even getting hot and the thermocouple amplifier output is a...

1 Photo
- Channel: General Electronics Technical Discussion
Today, 02:12 AM
TCL 75S421 New Backlight LED's Still No Backlight

by ChattFix

Hello everyone, I got a TCL 75S421 with no backlight. I swapped out the LEDs and still getting nothing. I checked a few readings, see pictures below. Can anyone point me in the next testing area or what to look at next?...
- Channel: Troubleshooting TVs and Video Sources
04-21-2024, 09:20 PM
Assistance with identifying replacement caps on ASUS P5VDZ-MX

by crosswinds

Hello,

So, pulled a motherboard out from storage, was working when put away, wont post when I took it out of storage today.
Since it was working, and it looks to be essentially time that killed it I figured its a good idea to replace the caps before digging further.
Looks to be only good quality caps on this board, so might not be the issue. But it is closing in on 20 years now so, wont hurt i guess

Its a ASUS P5VDZ-MX board.

I would really appreciate some assistance on what the best replacement caps would be for these:

Panasonic(M)...
- Channel: General Capacitor Questions & Issues
04-17-2024, 04:25 PM
Samsung UE55H8000SZ with TCON BN41-02112A

by michdundee

Hi all,
I'm facing a issue... hope you could help me. I have a T-CON board BN41-02112A from Samsung 55inch Curve TV.
I have just only 2 status blue LEDs ON since LED3 is off. I have tried to test some test points but VON is NOT OK very close to 0V. Is there someone that can help me on the debugging the issue? I'm supplying the board from an external 12V voltage source.
Thank you in advance.
BR,
Michele
[ATTACH=JSON]{"data-align":"none","data-size":"full","data-attachmentid":3259938}[/ATTACH]...
- Channel: Troubleshooting TVs and Video Sources
04-25-2024, 12:37 PM
ms-7b58 rev 1.0 boardview

by zaliuk

Hello, could someone spare me a Schematics for ms-7b58 rev 1.0 board MSI Z370 Gaming M5, got shorted two rails - 5v. and 3v., trying to find the cause.
Thanks in advance ...
- Channel: BIOS & Schematic Requests!
Today, 07:04 AM
A2442 hinge sensor has liqud damage

by vijayppatel017

A2442 hinge sensor has liquid damage, not possible to repair, is there any alternate?...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 03:26 AM

How do you trim a BIOS file?

by survivalbloke

I downloaded a BIOS file from Lenovo and once I extracted the actual BIOS from the executable, it is 16MB in size, but my IC(Winbond 25Q80DV) is only 8MB in capacity. I have read you can trim the BIOS file with a hex editor but I can't find any instructions on specifically what you will remove.
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 10:55 AM
need help with g513rc... not sure where to start, maybe a bios dump?

by tnap1979

my g513rc was doing a windows update and it had a bios update in it, the system rebooted, was doing something rebooted again, and hasnt functioned properly since..
ive researched reparing my bios, i have a ch341a black with 1.8v adapter, ive made 4 seperate dumps at different times for redundancy...
i have a feeling my bios is corrupted and preventing my system from booting..
does anyone have a g513rc bios dump i can test ???
or is anyone willing to help me out in another section with fixing my dumps ??
- Channel: BIOS Requests ONLY!
Today, 11:48 AM
Lenovo tablets boardview

by ballu

I need schematics and board view for these models. Please anyone got these files.
Thanks

lenovo miix 310-10icr boardview
lenovo miix 320-10icr boardview
lenovo d330-10igm boardview
- Channel: Schematic Requests ONLY!
Today, 03:37 AM
ms-7b58 rev 1.0 boardview

by zaliuk

Hello, could someone spare me a Schematics for ms-7b58 rev 1.0 board MSI Z370 Gaming M5, got shorted two rails - 5v. and 3v., trying to find the cause.
Thanks in advance ...
- Channel: BIOS & Schematic Requests!
Today, 07:04 AM
Samsung UE55H8000SZ with TCON BN41-02112A

by michdundee

Hi all,
I'm facing a issue... hope you could help me. I have a T-CON board BN41-02112A from Samsung 55inch Curve TV.
I have just only 2 status blue LEDs ON since LED3 is off. I have tried to test some test points but VON is NOT OK very close to 0V. Is there someone that can help me on the debugging the issue? I'm supplying the board from an external 12V voltage source.
Thank you in advance.
BR,
Michele
[ATTACH=JSON]{"data-align":"none","data-size":"full","data-attachmentid":3259938}[/ATTACH]...
- Channel: Troubleshooting TVs and Video Sources
04-25-2024, 12:37 PM
TRIAC circuit

by прямо

Anyone is familiar with a TRIAC circuit?

I came across this schematic, and I built it, but I can't seem to figure it out why I'm getting a low AC voltage output at the TRIAC terminals.

With 230V AC hot side at the TRIAC MT2, I measured 60V AC between MT1 and neutral side when the comparator output LED indicator is on, and 20V AC when it is off.

Same result if 230V AC hot side is at MT1, and I measured between MT2 and neutral side.

My heating element doesn't work with 60V AC. It's not even getting hot and the thermocouple amplifier output is a...

1 Photo
- Channel: General Electronics Technical Discussion
Today, 02:12 AM
Asus Rog GL703G/Battery Connector Short

by GlassMonolith

Hi, all. I have an Asus Rog Strix GL703G. Yesterday I took it apart to clean out the dust and redo the thermal. Unfortunately, when I attempted to pull the battery, the metal retaining clip (unable to retain itself due to genius engineering) popped off and shorted across the capacitors behind it. Now I have no response from the laptop with or without the battery.

I'm hoping maybe someone can help me read the board and figure out what potentially shorted. I have a soldering station, I can run hot air, I have a multimeter, I just have no idea how to trace or measure the power circuit....
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
03-08-2024, 04:35 PM
Flashdrive bios dell 3440

by J Peltonen

I cant create a flashdrive for unlock .bin because i cannot install software to make one cause its laptop i bought online but its locked to root dont own admin user for OS which blocks my intend to install any setup to start unlocking bios without having dells tool in pre installeded folder so can someone share me unpacked client to dell laptop what is to make biosflash for usbstick??
- Channel: BIOS Requests ONLY!
Today, 08:36 AM
Sony LED 65X9005A shuts down after few seconds - looking for help

by tec3000

Hi community! Germany calling I am wondering if you guys can help me out. I have an issue with my Sony LED TV. I've been told this is a good place to ask. Thanks for anyone who will reply and offer advice. Appreciated!

I have a KD-65X9005A Sony 4k LED TV. For a few weeks I've got this problem where I turn on the TV and within a few seconds the TV starts getting darker until it shuts itself off and I get the 4 blinking error code. HOWEVER there is one exception: Whenever I switch to the i-Manual, a full screen on-screen instruction manual, the TV never turns off. I tested for hours!...
- Channel: Troubleshooting TVs and Video Sources
03-20-2024, 07:29 AM
ASUS RUF GAMMING

by Repair Electronics

Anyone know moatherboard ruf the blacklight fuse ? Where they are ? Is an AMD Ryzer 5 i spend couple of hours to fiind it and still not fiind nothing....the problem is once i connect the afaptor i have image but not blacklight..when i remove the adaptor and stay on battery i not have at all image...and i thing so is the fuse problem

2 Photos
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 08:29 AM

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