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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?

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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: 42,312

Last Post: New Members - please post your introductions here

236

42,312

New Members - please post your introductions here

by Ggomez

Today, 06:30 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: 3,190 Posts: 32,715

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

3,190

32,715

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

by Perry Babin

Yesterday, 07:27 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: 4,503 Posts: 74,878

Last Post: How to program a specific flash region of a Nations N32G455RE MCU?

4,503

74,878

How to program a specific flash region of a Nations N32G455RE MCU?

by piernov

Today, 02:20 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: 3,985 Posts: 44,460

Last Post: Question about electricity

3,985

44,460

Question about electricity

by stj

Yesterday, 05:16 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: 6,867 Posts: 37,575

Last Post: Graphics card Schematics and Boardviews

6,867

37,575

Graphics card Schematics and Boardviews

by markajr

Yesterday, 11:03 AM

Sub-Forums:

BIOS & Schematic Requests! (2,710/16,454)

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: 32,151 Posts: 307,306

Last Post: ASUS UX425EA-KI560T- BIOS Password Removal

32,151

307,306

ASUS UX425EA-KI560T- BIOS Password Removal

by Mozwald

Today, 01:54 AM

Sub-Forums:

BIOS Requests ONLY! (12,827/155,022)

Schematic Requests ONLY! (4,790/28,737)

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: 5,329 Posts: 75,734

Last Post: Screwed onto the board. Thoughts?

5,329

75,734

Screwed onto the board. Thoughts?

by moheat

Today, 05:29 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: 27,488 Posts: 375,157

Last Post: Samsung le40a656a1f reaaaaaly slow poer up

27,488

375,157

Samsung le40a656a1f reaaaaaly slow poer up

by electrocuted

Today, 02:10 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: 4,193 Posts: 65,305

Last Post: Lenovo thinkbook 14 g2 itl not charchig

4,193

65,305

Lenovo thinkbook 14 g2 itl not charchig

by Nova10

Today, 05:14 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: 304 Posts: 1,675

Last Post: Canon printhead eeprom chip identification, and find pinout

304

1,675

Canon printhead eeprom chip identification, and find pinout

by Lerkor80913

05-18-2024, 05:18 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: 2,339 Posts: 27,576

Last Post: Old KSC Digmoda DDC552 Bang and Olufson ICE amp My mission to repair.

2,339

27,576

Old KSC Digmoda DDC552 Bang and Olufson ICE amp My mission to repair.

by abajor

Yesterday, 11:55 PM

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: 226 Posts: 3,951

Last Post: BOSCH Microwave CFA634 error E1006

226

3,951

BOSCH Microwave CFA634 error E1006

by CapLeaker

05-19-2024, 07:06 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: 1,008 Posts: 10,921

Last Post: Sensor on Aurora AS1018CD paper shredder doesn't work

1,008

10,921

Sensor on Aurora AS1018CD paper shredder doesn't work

by stj

Today, 05:46 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: 19,467

Last Post: anyone recommend an earth leakage clamp meter ?

1,381

19,467

anyone recommend an earth leakage clamp meter ?

by petehall347

Yesterday, 05:59 PM

Mark Channels Read

LG OLD55CX6LA TCON Short - Help Identifying Component

by spookt

Hi Folks

I've got a friend's LG OLED on the bench (well the dining table given the size of it!). It immediately powers off when turned on and sits in standby. PSU voltages are good and after disconnecting the TCON board there is stable 12V and 22V coming out of the PSU board.

Hunting around the TCON board there appears to be a shorted power rail (DVDD09_CORE) but I'm having issues identifying the component which is shorted. I've attached a picture. It's sitting before the coil so I'm assuming it's a MOSFET of some description, but the markings I can make out don't seem...

1 Photo
- Channel: Troubleshooting TVs and Video Sources
Today, 06:27 AM
Screwed onto the board. Thoughts?

by moheat

[U]Hardware Details - Samsung LC24FG70FQWXXL (C24FG70) Monitor with the board model (BN91-18169A) perhaps aka (BN41-02548A)[/U]

While wall mounting, I mistakenly picked a screw 0.5cm too big than the clearance and damaged the trace and one of the part (a capacitor, I think) on the board. Images attached.

Is this repairable or will I just have to get the entire board replaced? Please guide about this.[U]Hardware Details - Samsung LC24FG70FQWXXL (C24FG70) Monitor with the board model (BN91-18169A) perhaps aka (BN41-02548A)[/U]

While wall mounting, I mistakenly

3 Photos
- Channel: Troubleshooting Computer Displays
05-08-2024, 06:40 AM
How do I flash bios to an Alienware M16 R1 AMD edition?

by Arc717

I am trying to downgrade my bios on my Alienware so I can undervolt & overclock my CPU, and overclock my ram. I need to get to bios 1.2.2 for this. Dell doesn't allow downgrades, and their bios file is an exe compiled in c++, so I can't decompile it easily. I am wondering if I can flash the bios manually using a usb flasher. I would like to know if this is possible, and if so, where the bios chip would be. I know flashers are pretty cheap and the bios chip is 8-pin. There are two of these chips only when I open the back panel of the laptop. I'm not sure if there are any on the other side of...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
05-17-2024, 03:34 PM
Lenovo V15 G4 AMN need bios

by hamzafox

motherboard code KV481/KV581/ NM-F051 Rev 1.0
cpu R5 7000 SERİES
S/N.PF4K7WNG
[B]There is no backup[/B]motherboard code KV481/KV581/ NM-F051 Rev 1.0
cpu R5 7000 SERİES
S/N.PF4K7WNG
[B]There is no backup[/B]motherboard code KV481/KV581/ NM-F051 Rev 1.0
cpu R5 7000 SERİES
S/N.PF4K7WNG
[B]There is no backup[/B]
- Channel: BIOS Requests ONLY!
Yesterday, 09:43 AM
ASUS UX425EA-KI560T- BIOS Password Removal

by Mozwald

Hi can anybody help me with a Bios password removal on a ASUS UX425EA-KI560T /N:M6N0LP02P89724B NB2555_PCB_MB_V4

I have searched under Bios guides and Methods, extracted the bios and used a Hex reader to search for the correct string but i simply cant get my head around it.

Original Bios dump attached...
- Channel: BIOS Requests ONLY!
Today, 01:54 AM
Lenovo thinkbook 14 g2 itl not charchig

by Nova10

Hallo frind , i have [B]Lenovo thinkbook 14 g2 itl not charging ! the display backlight go on and off.
can enybody help wich chip is caus this isue.
Thanks[/B]

Hallo frind , i have [B]Lenovo thinkbook 14 g2 itl not charging ! the display backlight go on and off.
can enybody help wich chip is caus this isue.
Thanks[/B]

Hallo frind , i have [B]Lenovo thinkbook 14 g2 itl not charging ! the display backlight go on and off.
can enybody help wich chip is caus this isue.
Thanks[/B]
- Channel: Troubleshooting Power Supplies and Power Supply Design
Today, 05:14 AM
HP Elitedesk 800 G5 Desktop mini MPM Locked

by Khaldun Murad

Well hi to all
The big question: Is there any hope?😎
I think about 36 hours ago I begin my journey to find a solution for my pc model with no luck.
BCU: Access denied
Efi Shell: Hp Protocol Something etc..
I am not that experience, "but I can fight my way through"
What to do guys?
To be or not to be is not the question anymore.
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Yesterday, 10:02 AM
HP 14-dq0055dx - No Power After Shutdown - Must Reseat Internal Battery First, Then Powers On Normally.

by grimacelord

Hello again,

I am [I]once again[/I] working on this same laptop that I was working on in [URL="https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/3262622-hp-14-dq0055dx-bios-problem-pending-image-being-cleared-loop"]this thread[/URL]. I was able to fix all of the problems that it had, but now it has one final problem. The computer will turn on and work completely fine until you shut it down. Once the computer has been shut down, it will not turn on again, nor will it...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
05-22-2024, 02:32 PM
ASUS Vivobook S15 S532FA Bios needed

by Roli

Hello , the laptop turns on , but only black screen .
Serial : K8N0CX109826344

[B]S532FA-BQ004T[/B]

Thankyou !Hello , the laptop turns on , but only black screen .
Serial : K8N0CX109826344

[B]S532FA-BQ004T[/B]

Thankyou !Hello , the laptop turns on , but only black screen .
Serial : K8N0CX109826344

[B]S532FA-BQ004T[/B]

Thankyou !
- Channel: BIOS Requests ONLY!
05-21-2024, 04:24 PM
Epson L3210 Power Supply

by asiart

Hi, I need resistor value at R51 mark at Epson L3210 Power Supply. The model of PSU is Model EPS-167E. R51 is burn, so I didn't get the value. Thanks.
- Channel: Troubleshooting Power Supplies and Power Supply Design
Yesterday, 10:22 PM

ASUS UX425EA-KI560T- BIOS Password Removal

by Mozwald

Hi can anybody help me with a Bios password removal on a ASUS UX425EA-KI560T /N:M6N0LP02P89724B NB2555_PCB_MB_V4

I have searched under Bios guides and Methods, extracted the bios and used a Hex reader to search for the correct string but i simply cant get my head around it.

Original Bios dump attached...
- Channel: BIOS Requests ONLY!
Today, 01:54 AM
optocoupler? B3PBE0000060

by jm1234

Hi,
I'm troubleshooting SN board of Panasonic plasma TV and I'm curious about a component that looks like an optocoupler, it has 5 legs though. I tried to check between legs 1-2, but no diode junction there, it's open. So either that is not a diode there or it's burnt.
For future searches, the part num is B3PBE0000060, the label on the component says 9157 and N219.
Any idea?
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3277057}[/ATTACH]Hi,
I'm troubleshooting...
- Channel: Troubleshooting Power Supplies and Power Supply Design
Today, 12:51 AM
Epson L3210 Power Supply

by asiart

Hi, I need resistor value at R51 mark at Epson L3210 Power Supply. The model of PSU is Model EPS-167E. R51 is burn, so I didn't get the value. Thanks.
- Channel: Troubleshooting Power Supplies and Power Supply Design
Yesterday, 10:22 PM
LG OLD55CX6LA TCON Short - Help Identifying Component

by spookt

Hi Folks

I've got a friend's LG OLED on the bench (well the dining table given the size of it!). It immediately powers off when turned on and sits in standby. PSU voltages are good and after disconnecting the TCON board there is stable 12V and 22V coming out of the PSU board.

Hunting around the TCON board there appears to be a shorted power rail (DVDD09_CORE) but I'm having issues identifying the component which is shorted. I've attached a picture. It's sitting before the coil so I'm assuming it's a MOSFET of some description, but the markings I can make out don't seem...

1 Photo
- Channel: Troubleshooting TVs and Video Sources
Today, 06:27 AM
Lenovo thinkbook 14 g2 itl not charchig

by Nova10

Hallo frind , i have [B]Lenovo thinkbook 14 g2 itl not charging ! the display backlight go on and off.
can enybody help wich chip is caus this isue.
Thanks[/B]

Hallo frind , i have [B]Lenovo thinkbook 14 g2 itl not charging ! the display backlight go on and off.
can enybody help wich chip is caus this isue.
Thanks[/B]

Hallo frind , i have [B]Lenovo thinkbook 14 g2 itl not charging ! the display backlight go on and off.
can enybody help wich chip is caus this isue.
Thanks[/B]
- Channel: Troubleshooting Power Supplies and Power Supply Design
Today, 05:14 AM
Acer Nitro 5 (AN515-54) No charge No power

by earwig_nick

Hello all,
I'm working on an Acer Nitro 5 (AN515-54) with motherboard EH5VF LA-501P with a short on the power rail.
I'm just learning board level diagnostic, but here is what I've found so far.
I injected 1.5v to one of the positive leads on the DC jack connector (PJP101) and read about 1.4a to ground.
I felt around for heat and found the MOSFET at PQB12 is rippin hot!
when i pulled the MOSFET from the board the short went away. In my mind it was a faulty MOSFET.
Ordered a replacement and got it installed only to find it gets very hot again and the short returns....
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 06:07 PM
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]...
- Channel: BIOS Requests ONLY!
03-17-2024, 11:57 AM
Lenovo ideapad 520, NM-B452 not powering up

by FrozenHaxor

Hey, I'm repairing a board from liquid damaged laptop, managed to get 5V and 3.3V rails up, some passives were corroded away. Only problem right now is no reaction to power button, there is no PCH_PWR_EN signal, DPWROK_EC is 2.5V, +1.0VALW is missing. Replaced KBC with brand new one, reprogrammed. No change. Any ideas? Schematic and boardview are available, attached them at the bottom. Boardview file can be opened by "BoardViewer" software.

Please don't mind the damage near UC4, it was caused by liquid damage and there is battery connector on the other side,...

2 Photos
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 11:10 AM
How to program a specific flash region of a Nations N32G455RE MCU?

by Nikan.e

Greetings and salutations!

I have a device that uses an N32G455RE. Unfortunately, its flash got corrupted. I have a dump of a working chip.
How can I program a specific region of the flash or the whole flash without touching the RAM, option registers, etc.?
I do not have a J-Link debugger and won't buy one, as I am not rich.
I have flashed a Nucleo board with an ST-Link to a J-Link just to find out that the ST-J-Link only supports ST chips.

What would be the cheapest and easiest option to program the Nations chip's flash without touching registers etc.?...
- Channel: General Computer & Tech Discussion
Yesterday, 11:51 PM
Old KSC Digmoda DDC552 Bang and Olufson ICE amp My mission to repair.

by abajor

I'm about to take a journey into repairing this 3 Channel ICE amp. It's got a bunch of fun components I am not familiar with like Direct Stream Digital chips. It also has some onboard Digital Signal Processor which I haven't identified yet.

I am not familiar with ICE amp circuits other than they are a type of PWM amplifier so I'm assuming they require a ton of high frequency filtering on the output. I'm also assuming that the output of the DSD chips probably directly feed the ICE amp signal since DSD is also essentially PWM or creating an averaged AC signal using high frequency ~2MHz...
- Channel: Troubleshooting Audio Equipment
Yesterday, 11:44 PM

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