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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

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

Topics: 236 Posts: 42,301

Last Post: New Members - please post your introductions here

236

42,301

New Members - please post your introductions here

by BHorde

Today, 07:22 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: 3,191 Posts: 32,716

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

3,191

32,716

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

by Perry Babin

Today, 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: 4,502 Posts: 74,876

Last Post: Looking for info on Realtek RTD2132 ic

4,502

74,876

Looking for info on Realtek RTD2132 ic

by kaypdss

Today, 02:15 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: 3,985 Posts: 44,460

Last Post: Question about electricity

3,985

44,460

Question about electricity

by stj

Today, 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: 37,570

Last Post: Graphics card Schematics and Boardviews

6,867

37,570

Graphics card Schematics and Boardviews

by markajr

Today, 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: 32,149 Posts: 307,306

Last Post: Legion 5 15IMH05 Bios

32,149

307,306

Legion 5 15IMH05 Bios

by ajyanz

Today, 09:13 PM

Sub-Forums:

BIOS Requests ONLY! (12,825/155,015)

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: 75,732

Last Post: Looking for help with a Viewsonic VP230mb where the backlight comes on only momentarily

5,329

75,732

Looking for help with a Viewsonic VP230mb where the backlight comes on only momentarily

by CapLeaker

Today, 04:34 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: 27,486 Posts: 375,148

Last Post: LG 43UJ701 (EAX67166104) kapanıp açılıyor,

27,486

375,148

LG 43UJ701 (EAX67166104) kapanıp açılıyor,

by ngunay

Today, 02:42 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: 4,190 Posts: 65,294

Last Post: Welder not turning on - Learning

4,190

65,294

Welder not turning on - Learning

by CapLeaker

Yesterday, 05:27 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: 2,338 Posts: 27,574

Last Post: Galaxy Buds FE SM-R400

2,338

27,574

Galaxy Buds FE SM-R400

by therealraffles

Today, 03:39 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: 10,920

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

1,008

10,920

Sensor on Aurora AS1018CD paper shredder doesn't work

by CapSnap123

Today, 08:47 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: 1,381 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

Today, 05:59 PM

Mark Channels Read

Gigabyte G5 KE BIOS Password

by GIGX

Hello everyone! This is my first post. Hope I dont mess it up I have found this site recently and was hoping if what im about to ask can be done. I have a [U][B]Gigabyte G5 KE[/B][/U] laptop. When I first bought it I did set a Administrator BIOS password but I have forgotten it. It would be very nice if I could gain access to the BIOS again. So is this possible and how should I proceed? The BIOS brand is [B]INSYDE[/B]. Im very new to this so I dont have any experience to be honest. Hope its fine. Thanks a lot in advance.Hello everyone! This is my first post. Hope I dont mess it up I have
- Channel: BIOS & Schematic Requests!
Today, 09:13 PM
A1502 820-3536 no backlight - PPVOUT_S0_LCDBKLT=0V

by vincelx

On this board I have no backlight, but I can see that an image is present when I put a strong light behind the lid.

On LCD connector:
PPVOUT_S0_LCDBKLT =0V - resistance to ground on this pin: 163ko
LCD_HPD_CONN =2.5V
PP5VR3V3_SW_LCD =5V
EDP_PANEL_PWR_OR_PSR_EN =3.3V

EDP_PANEL_PWR =3.3V
LCD_PSR_EN =0V
EDP_BKLT_EN =3.3V

EDP_BKLT_PSR_EN =3.3V
LCDBKLT_EN_L =12.5V

On U7700:
VDDD =5V
VDDA =5V
EN =3.3V
SD =12.4V
VSENSE_N =12.6V
VSENSE_P =12.6V

Any suggestion on...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 06:42 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
Today, 06:07 PM
Greetings all. Blew a cap off and don't know the value of it

by Kurgan77

I found a short on a mosfet in the vrm and used my air station to remove the bad component. and after viewed my work and noticed that had also blew the cap above it off as well... it went to cap heaven. I don't need the boardview file just what cap values are needed to replace the component. This is on a gigabyte r927xoc-4gd Windforce. I am a novice at repairing as that was a rookie mistake, + side is removal of the shirted package cleared up the short.

1 Photo
- Channel: General Capacitor Questions & Issues
05-12-2024, 02:36 PM
A few Gen 3 iPads with differing charging issues (A1403, A1430, A1416) & iPad Air 2 (A1566)

by Aimbit

I purchased some broken iPads (non-charging), trying to repair something a little trickier than retro consoles... I have all the necessary tools.

A1430 - Draws 930mA consistent, screen is black with red/empty battery icon, no charging symbol.
A1403 and A1416 - Draw 930mA, wait 3 seconds, dip to 0, repeat.
A1566 - Similar to the previous issue, it draws some power for a few seconds, then resets my ammeter, and repeats. Waiting for my lightning port tester to come to check the tristar.

Seeing as these are old, and likely have been dead for ages, is a battery...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 06:36 PM
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
Today, 11:10 AM
ASUS M3401QA BIOS request

by kingblade20

Hi,

My M3401QA does not power on properly: no display (all black) and with white LED charging port blinking slowly (once every ~3 seconds).
Checked several points across the board and supplies are up and running but I need to double check when I get schematic.
Result is still the same even with DC jack inserted and battery connector removed.

Tried flashing the latest BIOS as of this date to no avail which I suspect has something to do with DMI but tools could not run properly on my machine and couldn't find manual copy of DMI through hex editor and not sure...
- Channel: BIOS Requests ONLY!
05-20-2024, 11:28 AM
ThinkCentre X1 - Type 10KE

by ormcra

Hi guys!, i searching all bios.

Main(16MB) , 2MB y 1MB (EC)
For this machine, a not find over internet.
Thanks in advanced.

Brand: Lenovo
Model: Thinkcentre X1 Type 10KE
Serial: S4BC4340
Product Id: 10KECTO1WW
Motherboard: LM1 MB
15000-1
348.04A13.0011...
- Channel: BIOS & Schematic Requests!
Today, 08:22 AM
ASUS N550JK laptop reboots after 30 minute, BIOS extracted invalid...

by bschwand

Hi all,

as subject line says, I have a laptop that reboots after 30 minutes. Investigation leads me to believe that is due to intel ME as it happens everytime after 30 minute from boot, it just turns off, no overheating, nothing weird.
I found a lot of information about cleaning ME like this [URL]https://winraid.level1techs.com/t/guide-clean-dumped-intel-engine-cs-me-cs-txe-regions-with-data-initialization/31277[/URL] and this [URL]https://github.com/corna/me_cleaner[/URL]
Anyway, first step is to dump the bios. I found the Winbond W25Q64FV chip on the motherboard, dumped...
- Channel: BIOS Requests ONLY!
Yesterday, 02:48 AM
Operating caps well below rated voltage

by Perry Babin

I think this has been answered but I couldn't find the thread.

Someone asked me if it would harm a capacitor (10F [not a typo], 24v) if it was operated on nothing more than 12v.

So, I ask... Does it change any of the capacitor's characteristics/parameters/? in any way if it is never operated near rated voltage?

If operated for years at 1/2 rated voltage, does it accept full rated voltage like it would if it had always been operated at the higher voltage?

Or would it require reforming?
- Channel: General Capacitor Questions & Issues
Today, 05:43 PM

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
Today, 06:07 PM
Gigabyte G5 KE BIOS Password

by GIGX

Hello everyone! This is my first post. Hope I dont mess it up I have found this site recently and was hoping if what im about to ask can be done. I have a [U][B]Gigabyte G5 KE[/B][/U] laptop. When I first bought it I did set a Administrator BIOS password but I have forgotten it. It would be very nice if I could gain access to the BIOS again. So is this possible and how should I proceed? The BIOS brand is [B]INSYDE[/B]. Im very new to this so I dont have any experience to be honest. Hope its fine. Thanks a lot in advance.Hello everyone! This is my first post. Hope I dont mess it up I have
- Channel: BIOS & Schematic Requests!
Today, 09:13 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
A2442 820-02098 5v 0a

by sewsulle

Good afternoon,
I'd appreciate help diagnosing my A2442 that's only taking 5v and 0a

This was my personal laptop and I had closed it at the end of a class and opened it in the next class when it just didn't wake up from sleep (The battery was charged). I connected a charger later that night and it booted right up but touch ID stopped working. The next day it did the same thing but never turned back on when I plugged in a charger.

I though the touch ID issue was weird but I'm not sure if that info helps.

When this happened months ago I tried to diagnose...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 07:56 PM
A few Gen 3 iPads with differing charging issues (A1403, A1430, A1416) & iPad Air 2 (A1566)

by Aimbit

I purchased some broken iPads (non-charging), trying to repair something a little trickier than retro consoles... I have all the necessary tools.

A1430 - Draws 930mA consistent, screen is black with red/empty battery icon, no charging symbol.
A1403 and A1416 - Draw 930mA, wait 3 seconds, dip to 0, repeat.
A1566 - Similar to the previous issue, it draws some power for a few seconds, then resets my ammeter, and repeats. Waiting for my lightning port tester to come to check the tristar.

Seeing as these are old, and likely have been dead for ages, is a battery...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 06:36 PM
ASUS proart Studiobook h7600ZW; Had DC in port replaced and all the sudden it isn't charging but is the charging sign is on!

by Scarfycake

Hi all,

I sent my [B]ProArt Studiobook 16 OLED (H7600, 12th Gen Intel) [/B]to the local repair guys to have a very simple DC in port replaced. I sourced the part myself on accessoires-asus (french company) after struggling to find the right part in the UK. It looked completely the same to the installed part from what I can tell. Originally the only issue with the laptop was a bad / loose DC connection, and so the computer and battery acted completely normal aside from a very poor connection that would fail at certain angles. After the repair was completed I brought it home and used...

5 Photos
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
05-21-2024, 08:16 AM
Galaxy Buds FE SM-R400

by therealraffles

Hey all

I have a set of FE buds, the right side will not connect, I don’t believe it is even charging..I am able to connect and get audio through the left, the case appears to charge itself and the left correctly.

The left has ~1.3v between the pins, the right side has ~-0.7v ..

This is wonky, surely? My assumption would at least be the same charging voltage, even if the..

can someone confirm that the earbuds polarity is different?

I may try and inject 1.3v onto the charging pads of the right, if it will take even a little charge...
- Channel: Troubleshooting Audio Equipment
Today, 11:13 AM
Samsung QE82Q70RAT no backlight

by sansanpartida

Hi everyone!

Hope you're all having a great day, and thank you very much for stopping by and taking the time to read this post to help me with my parents' Samsung TV.

My issue: No backlight.

Model: QE82Q70RAT
Type No: QE82Q70RAT

The TV was already serviced by Samsung once under warranty for the exact same issue, but six months after the fix, the backlight went out again. Now, Samsung is asking for nearly the same price as a brand new TV to fix this with the same 6-month guarantee.

So hopefully, I can fix this cheaper.
...
- Channel: Troubleshooting TVs and Video Sources
Yesterday, 06:56 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
Today, 11:10 AM
Question about electricity

by matk

Hello, I have a question about electricity. Suppose I'm well insulated from ground and neutral, and the live wire of mains comes in touch with a wound in my finger, will this potential interfere with body voltages, hearth for example, or it will only go to its circuit return path ?

Thanks!
- Channel: General Electronics Technical Discussion
Today, 02:12 PM

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