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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

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: 42,077

Last Post: New Members - please post your introductions here

236

42,077

New Members - please post your introductions here

by Jorge De la Cuba Loaiza

Today, 03:21 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: 3,190 Posts: 32,711

Last Post: Greetings all. Blew a cap off and don't know the value of it

3,190

32,711

Greetings all. Blew a cap off and don't know the value of it

by Kurgan77

Today, 12:15 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: 4,499 Posts: 74,851

Last Post: Modify BIOS to non-uefi

4,499

74,851

Modify BIOS to non-uefi

by hexdy

Today, 01:48 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: 3,979 Posts: 44,386

Last Post: Identifying component Flyback? DC-DC?

3,979

44,386

Identifying component Flyback? DC-DC?

by redwire

Today, 01:02 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: 6,842 Posts: 37,420

Last Post: De-Soldering & Soldering Dr-Mos on a Graphica Card

6,842

37,420

De-Soldering & Soldering Dr-Mos on a Graphica Card

by dreico33

Today, 02:29 PM

Sub-Forums:

BIOS & Schematic Requests! (2,696/16,363)

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

Last Post: Fortinet 50E Slowing down internet throughput

501

5,455

Fortinet 50E Slowing down internet throughput

by CapLeaker

05-12-2024, 09:21 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: 32,005 Posts: 305,763

Last Post: Dell Latitude 3390 17810-1 CAD Boardview & Schematic

32,005

305,763

Dell Latitude 3390 17810-1 CAD Boardview & Schematic

by Lshon

Today, 02:41 PM

Sub-Forums:

BIOS Requests ONLY! (12,757/154,106)

Schematic Requests ONLY! (4,758/28,594)

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: 5,324 Posts: 75,721

Last Post: LG 34UC87C-B X3 Firmware Dumps all EEPROMS

5,324

75,721

LG 34UC87C-B X3 Firmware Dumps all EEPROMS

by Comps&Cons

Today, 12:31 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: 27,468 Posts: 374,980

Last Post: Samsung LED UHD TV - Bad Main Board or Bad T-Con Board? Pictures inside

27,468

374,980

Samsung LED UHD TV - Bad Main Board or Bad T-Con Board? Pictures inside

by E--Man

Today, 03:19 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: 4,184 Posts: 65,247

Last Post: Hanmatek HM310T bench PSU - schematics wanted

4,184

65,247

Hanmatek HM310T bench PSU - schematics wanted

by Dangerousk

Today, 12:07 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: 304 Posts: 1,672

Last Post: I need binary for Epson L3150 printer, I describe what happens to me here...

304

1,672

I need binary for Epson L3150 printer, I describe what happens to me here...

by valente222

Today, 01:59 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: 2,331 Posts: 27,537

Last Post: Yamaha stagepass 500

2,331

27,537

Yamaha stagepass 500

by gbaicu51

Today, 10:11 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: 225 Posts: 3,927

Last Post: Saeco SG200E Coffee Machine

225

3,927

Saeco SG200E Coffee Machine

by stj

Today, 01:55 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: 1,005 Posts: 10,888

Last Post: Terramaster F2-220 NAS

1,005

10,888

Terramaster F2-220 NAS

by mcunanan19

Yesterday, 06:11 AM

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: 19,442

Last Post: anyone recommend an earth leakage clamp meter ?

1,381

19,442

anyone recommend an earth leakage clamp meter ?

by redwire

Today, 01:21 PM

Mark Channels Read

Samsung LED UHD TV - Bad Main Board or Bad T-Con Board? Pictures inside

by E--Man

Hi All,

Thanks for reading. Based on the interesting fact that the vertical lines issue don't seem to effect the menus whatsoever but rather everything around the menu regardless of video is shown, I'm trying to set mine whether the issue is the main board or the t-con board.

Again what's baffling is that the menu is not effected whatsoever. However, any other video displayed regardless of inputs or when no inputs exist exhibits the vertical lines and seem to effect black areas only.

The lines are green in color when the tv is in "Game Mode" and...

5 Photos
- Channel: Troubleshooting TVs and Video Sources
05-12-2024, 10:52 AM
macbook a1707 820-00928

by PITERPENY

there is no reaction, it hangs at 20 V/0A. There was a little corrosion in the u7650 area. Replacing the u7000 did not help. Tell me, what else could it be? PPBUS_G3H=12.9V
Flashing the bios with a clean region also did not work!
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
05-06-2024, 04:31 PM
Black screen and no boot Dell Latitude 5490 mainboard DDM70 LA-F401P Rev: 1.0 (A00)

by moscast

Hi everyone, after having programmed the bios because it was unable to update using the official tool under Windows and also with bios update by pressing F12 on post, now the notebook no longer starts.
I tried to restore the bios backup I had made but it doesn't work. It always gives me a black screen and no boot.

The service tag is: H27K5Q2 and i add my last backup

Someone can help me to understand what is may heppend?...
- Channel: BIOS Requests ONLY!
Today, 03:06 PM
Vestel tv, how to flip the image?

by France_53

Hello everyone from Italy, I'm here to ask for help on a Vestel TV, I've had a Vestel TV branded "XD" with a broken screen for years, but now I've found a Telefunken (still Vestel but older) and I've mounted the panel on the "XD" TV, it works, but the screen is upside down, given that Vestel does not allow you to rotate the image from the service menu, does anyone know how to solve the problem? the original panel is marked ves315WNDS-2D-N12 while the main board 17mb110, the panel I mounted instead in the tv (from the telefunken) is a ves315WNDA-02. ... It is not worth repairing...
- Channel: Troubleshooting TVs and Video Sources
05-12-2024, 05:22 AM
Dell Precision 5510, AAM00 LA-C361P Rev:2.0 turns on, no image.

by andrhouseolly

Hi.
I kindly ask you to help me solve the problem.
Dell Precision 5510, motherboard AAM00 LA-C361P Rev:2.0
The board turns on, there is no image.
Read more. When the power supply is connected, the front panel indicators light up briefly.
When you press the power button, the button indicator lights up. The board works
there is no image, there is no matrix initialization, there is no image on HDMI.
When turned on, the fans do not spin, but when they warm up they start spinning.
When you turn off the button, the fans spin up to full speed for a short...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
05-11-2024, 03:14 PM
De-Soldering & Soldering Dr-Mos on a Graphica Card

by dreico33

Hellow guys, i recently have a Asus 4070 Ti, and a EVGA 3090 Ftw3 both with Dr-Mos Problems.

My question is this : I am having real difficult time desolderig and solder again a new Dr-Mos. Is taking for ever to do the job, especially when you have to disolder the dr-mos and with the IC you are taking along caps, resistances and ... welcome to hell!

I am using a pre-heater board with a temp of 120C and a Quick 861DW 480 Temp air 80. And with all these its like a nightmare take out these IC's and apply fresh solder and install a new one.

So i am asking you...
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Today, 02:29 PM
Tv Philips 55PUS6031 no image, backlight ok

by Raulnn

good night! I have this TV, with quite poor build quality. It has a tcon integrated into the panel, a single flex from the tcon to the panel, and the 2 panel controller boards joined by glued flexes. There is no way to separate them.

The symptom is that the image is not visible, but the backlight works. How to know if the problem is in the main or in the tcon-panel? I can't override zones.
- Channel: Troubleshooting TVs and Video Sources
Today, 02:11 PM
Need bios zotac geforce rtx 3090 trinity

by mohamedbalwe

Hello everyone
need bios zotac geforce rtx 3090 trinity 24gb oc 384bit gddr6x micro
Size bios 2mb
- Channel: BIOS & Schematic Requests!
Today, 02:11 PM
Help diagnosing laptop ASUS X556UJ_MB REV 2.0 motherboard

by Allgone

Hello everyone, I have this Asus model X556UA that when plugged in I get the white light but nothing happens when pressing the power button. I've been looking into it following the power sequence and found out that the power button is sending the signal to the EC (PWR_SW#) but the EC is not sending the PM_PWRBTN# to the PCH (it always stays at 3.3V). I'm stuck here and don't know what else can I do, maybe I can get some help. I've seen that this could mean that the PCH is dead but I don't know how I can confirm this. Also this may not be important but when plugged in, the PCH/CPU (they go together...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 02:10 PM
Need bios hp omen tpn-q173

by mohamedbalwe

Hello everyone
please i need bios for hp omen tpn-q173
Model board DAG35AMB8E0 REV: E Gpu N16P-GX-A2 Gtx 960m
thanks...
- Channel: BIOS Requests ONLY!
Today, 02:08 PM

I need binary for Epson L3150 printer, I describe what happens to me here...

by valente222

hello everyone.
I need binary for Epson L3150, this printer is something special today. It happens that when you connect USB to the PC, it does not recognize drivers nor does the software even find it to load the emergency firmware again. The device only turns on and the power button LED remains constantly on. The head normally comes to its ready position but does not react to buttons or scan. I point out that I have also tried installing a new head, scanner or new button panel... but it is still in a vegetative state. Has this ever happened to anyone?...
- Channel: Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices
Today, 01:08 PM
Samsung QE50Q60TAU - Horizontal screen lines

by Runlinc

Hi everyone, the tv was in a continuous reboot cycle. To get the best screen image i can I taped the VGH and VSS pins on the left side buffer board joining ribbon.

I am left with a good image apart from the black horizontal lines that I cannot get rid of.

I cannot find anything on the buffer boards that has shorted.

Do you think there is anything i can do to eliminate the lines, or are they caused by an internal panel short and the image cannot be impoved.

Many thanks for your assistance

5 Photos
- Channel: Troubleshooting TVs and Video Sources
Today, 07:40 AM
MacBook Air 13 2014 - Remove EFI password

by ritalo

Hello,

I have a MacBook Air 13 inches 2014.

I have set a EFI password and I can't remember it : now I want to reinstall macOS and I can't because the MacBook is asking for the password.

I know how to remove the password with a usb programmer.
I plug the usb programmer to the motherboard and to my pc with usb, I read the EFI and I save it to a file.

Then I have to find this value in the file : $SVS because it indicate where is the password.

But I can't find the value.

I have attached the file

Thank...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 12:10 PM
Modify BIOS to non-uefi

by hexdy

Hello, I wanted to know if it is possible to modify a BIOS file to accept a legacy disk when it does not have the capability, I had this problem on a Optiplex 3060 that were donated to my job where we use non-uefi linux distros, we cannot use uefi since is a "big machine" with this systems beign the center of all of it, we can't change the distro now, maybe make some changes, but if I can modify the BIOS it would be awesome.
- Channel: General Computer & Tech Discussion
Today, 10:31 AM
Lenovo Ideapad 320-15ikb: Comes on and goes off

by Nagyesz

Hey guys, I have a Lenovo Ideapad 320-15ikb NM-B241 rev:1.0.
After turning it on, it runs for a few seconds then shuts off completely. No screen, no fan. After shutdown, a red light comes on and off fast. I've been trying to troubleshoot this for days now. It's never been opened up; the Lenovo sticker is still intact.

(!)I tried with a different BIOS battery, without any ribbon cables, on battery power, without the keyboard, and it's always the same.

Any insights on what might be causing this?...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 03:05 AM
Samsung LED UHD TV - Bad Main Board or Bad T-Con Board? Pictures inside

by E--Man

Hi All,

Thanks for reading. Based on the interesting fact that the vertical lines issue don't seem to effect the menus whatsoever but rather everything around the menu regardless of video is shown, I'm trying to set mine whether the issue is the main board or the t-con board.

Again what's baffling is that the menu is not effected whatsoever. However, any other video displayed regardless of inputs or when no inputs exist exhibits the vertical lines and seem to effect black areas only.

The lines are green in color when the tv is in "Game Mode" and...

5 Photos
- Channel: Troubleshooting TVs and Video Sources
05-12-2024, 10:52 AM
Black screen and no boot Dell Latitude 5490 mainboard DDM70 LA-F401P Rev: 1.0 (A00)

by moscast

Hi everyone, after having programmed the bios because it was unable to update using the official tool under Windows and also with bios update by pressing F12 on post, now the notebook no longer starts.
I tried to restore the bios backup I had made but it doesn't work. It always gives me a black screen and no boot.

The service tag is: H27K5Q2 and i add my last backup

Someone can help me to understand what is may heppend?...
- Channel: BIOS Requests ONLY!
Today, 03:06 PM
De-Soldering & Soldering Dr-Mos on a Graphica Card

by dreico33

Hellow guys, i recently have a Asus 4070 Ti, and a EVGA 3090 Ftw3 both with Dr-Mos Problems.

My question is this : I am having real difficult time desolderig and solder again a new Dr-Mos. Is taking for ever to do the job, especially when you have to disolder the dr-mos and with the IC you are taking along caps, resistances and ... welcome to hell!

I am using a pre-heater board with a temp of 120C and a Quick 861DW 480 Temp air 80. And with all these its like a nightmare take out these IC's and apply fresh solder and install a new one.

So i am asking you...
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Today, 02:29 PM
Tv Philips 55PUS6031 no image, backlight ok

by Raulnn

good night! I have this TV, with quite poor build quality. It has a tcon integrated into the panel, a single flex from the tcon to the panel, and the 2 panel controller boards joined by glued flexes. There is no way to separate them.

The symptom is that the image is not visible, but the backlight works. How to know if the problem is in the main or in the tcon-panel? I can't override zones.
- Channel: Troubleshooting TVs and Video Sources
Today, 02:11 PM
Need bios zotac geforce rtx 3090 trinity

by mohamedbalwe

Hello everyone
need bios zotac geforce rtx 3090 trinity 24gb oc 384bit gddr6x micro
Size bios 2mb
- Channel: BIOS & Schematic Requests!
Today, 02:11 PM

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