Badcaps Electronics Repair Forum & Schematic Search

Directory

Topics

Posts

Last Post

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: 234 Posts: 41,499

Last Post: New Members - please post your introductions here

234

41,499

New Members - please post your introductions here

by oppab

Yesterday, 02:20 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: 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: 3,179 Posts: 32,644

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

3,179

32,644

Assistance with identifying replacement caps on ASUS P5VDZ-MX

by crosswinds

Today, 01:35 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: 4,491 Posts: 74,778

Last Post: Help: Looking for guru input on upgrading an S12II-based PSU

4,491

74,778

Help: Looking for guru input on upgrading an S12II-based PSU

by momaka

Yesterday, 01:32 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: 3,959 Posts: 44,237

Last Post: How to replace SMD blue Led with conventional red LED?

3,959

44,237

How to replace SMD blue Led with conventional red LED?

by cap__

Today, 12:34 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: 6,775 Posts: 37,050

Last Post: HP Elitedesk 800 G4 DM

6,775

37,050

HP Elitedesk 800 G4 DM

by hardware1

Today, 01:06 AM

Sub-Forums:

BIOS & Schematic Requests! (2,659/16,140)

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: 499 Posts: 5,433

Last Post: Security camera linking remotely to NVR

499

5,433

Security camera linking remotely to NVR

by CapLeaker

03-23-2024, 06:59 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: 31,660 Posts: 301,043

Last Post: Wharfedale Movie Star 70+ Schematic Required.

31,660

301,043

Wharfedale Movie Star 70+ Schematic Required.

by hemant_2222

Today, 01:17 AM

Sub-Forums:

BIOS Requests ONLY! (12,615/151,291)

Schematic Requests ONLY! (4,704/28,247)

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: 5,314 Posts: 75,659

Last Post: Asus VG278 mosfet identification ?

5,314

75,659

Asus VG278 mosfet identification ?

by guizmo1967

Yesterday, 08:38 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: 27,410 Posts: 374,170

Last Post: Samsung/UN65H6300AF LOGO APPEARS AND SHUTS OFF

27,410

374,170

Samsung/UN65H6300AF LOGO APPEARS AND SHUTS OFF

by Davi.p

Today, 12:43 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: 4,169 Posts: 65,142

Last Post: Argon SA1 audio amplifier power-supply - fuse blown after fixing the short?

4,169

65,142

Argon SA1 audio amplifier power-supply - fuse blown after fixing the short?

by CapLeaker

Yesterday, 05:50 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: 300 Posts: 1,661

Last Post: Hello Need DumpsFile for TS3150

300

1,661

Hello Need DumpsFile for TS3150

by Netbazillus

04-08-2024, 11:57 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: 2,311 Posts: 27,388

Last Post: Sony Receiver STR-4800SD L/R Balance

2,311

27,388

Sony Receiver STR-4800SD L/R Balance

by CapLeaker

Yesterday, 08:03 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: 221 Posts: 3,889

Last Post: UNOLD Elegance Typ no. 58105 induction hotplate - Component identification

221

3,889

UNOLD Elegance Typ no. 58105 induction hotplate - Component identification

by mabinternet001

Yesterday, 12:55 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: 996 Posts: 10,837

Last Post: I need to get a Fat PS2 Playstation 2 Controller Port Cable SCPH-3003

996

10,837

I need to get a Fat PS2 Playstation 2 Controller Port Cable SCPH-3003

by Fast Alpha

Yesterday, 10:28 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: 1,374 Posts: 19,316

Last Post: anyone recommend an earth leakage clamp meter ?

1,374

19,316

anyone recommend an earth leakage clamp meter ?

by petehall347

Yesterday, 06:07 PM

Mark Channels Read

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
Yesterday, 04:25 PM
820-00165 no backlight

by vinzmt

hi to all
i have this logic board with no back light, image is present.
unknow istory.

on q7707 pin 5 EDP_BKLT_EN found 3.3 v, pin 1 gnd damage, pin 2 BKLT_PLT_RST_L only 0.08v (but is 3.3 on r2088 pin 2)
remove q7707 and find this

any suggestions?
thanks...

1 Photo
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 07:05 AM
Wharfedale Movie Star 70+ Schematic Required.

by hemant_2222

Hello Friends,

Greetings!

I have taken this active subwoofer from Wharfedale for restoration. This is already in a bad shape as far as the connections goes. It has already been worked by local technicians. The most important part that I am looking forward is the schematic diagram, as there is jumper placed and a track has been cut, as if to bypass the actual connection. I am not sure if this is by design or someone has tried something to achieve.

Another thing is the TDA7294 was badly treated with its legs cut and it had a crack too, so I have replaced it...
- Channel: Schematic Requests ONLY!
Today, 01:17 AM
Lenovo TB-X605F fake charging after charging connector replacement.

by thesame

Hy guys, i have this lenovo TB-X605F with charging problem, the tablet is fake charging, i have replaced the charging connector twice, it only draws 0.40 Amps when pluging the cable for the first time then it stops drawing any Amps but the tablet keeps showing the charging image at 0% as long as i keep it connected. I have no voltage at the battery connector with the cable pluged, but i have 5 volts after usb connector on some testing points on the board.
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
04-03-2024, 03:14 AM
Samsung/UN65H6300AF LOGO APPEARS AND SHUTS OFF

by Super360

Hi as you can see from title, I have a samsung tv here that will show the smart tv logo and then no picture after that even hitting input or menu on remote and shows nothing but the backlight still appears to be on. The tv will turn itself off after a minute or so automatically. I'm somewhat confused if this is either a eeprom problem or a bad led strip problem. The power supply makes a pretty noticeable humming sound when it's turned on leading me to believe one of the leds are shorted but idk honestly. Any of you guys have any help for me? I have a good multi meter and can take pictures of whatever...

4 Photos
- Channel: Troubleshooting TVs and Video Sources
04-13-2024, 10:05 PM
How to replace SMD blue Led with conventional red LED?

by cap__

"I heard that a blue LED has different voltage values than green and red ones. Green and red ones are easily replaceable, but how do I do that with the blue one?"

"I have to use the blue one, because green means fully charged and blue means charging."

[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"20240415_172809.jpg","data-attachmentid":3253246}[/ATTACH]...
- Channel: General Electronics Technical Discussion
04-15-2024, 09:59 AM
Lenovo Legion 5 Pro (R9000P ARX8)

by dimondimonich

Hi guys! We need a bios dump.
Model Legion 9000 PRO 8 (2023)
s/n PF4T63Y1
I downloaded the bios on the official Lenovo website
It is not possible to fill it with a programmer on a flash drive
In the original flash drive, the file weight is 2 MB.
Please help me)
- Channel: BIOS Requests ONLY!
Yesterday, 06:36 PM
DAOR33MB6E0 REV:E Partial ON

by ravi_1617

Hi This board turns on
after starting consumes 0.09 Amps
3.3 and 5 volts ok
1.5 present at LP16
1.7 Present at PL 15
1.05 Present at PL 17
.9 Present at PL23
no other power reading

Tried to bios flashing ,came to know U31 bios chip pin 7 is found open, Replaced chip/flashed , still same condition

Thanks for Helping
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
03-22-2024, 02:23 AM
lenovo ideapad NM-D031 3VALW issue

by reassor

Hi.
I got dead one.
3VALW is just pulsing then goes down. i removed the jumper PJ402 and it suddenly stays up but PG pin on that IC is around 0.5v and droping.
There is no obvious shorts. Wierd thing is that on the other side of the PJ402 i have 1.4V from somwhere ...

Injecting 3.3v there draws 300mA and nothing is heating up.

the ic is SY8386BRHC_QFN16 (kinda uncommon here - so i do not have a spare to test it)

any ideas to check before i order a few of these?
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 01:47 PM
Dell E7240 mobo help

by AdrenalinTL

Hi,

Very new to this. So pretty basic / silly question. Can this be the cause of a totally dead mobo? And, is it repairable if I bridge tracks etc?

Thanks

1 Photo
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 11:36 AM

Samsung 50AU7172, only blinking red light

by norbiszoke

Hello,

We have this set here in our shop that is not ginving sign of life besides red light that is blinking one time after pressing the button and nothing more... After detaching the mainboard from the PSU (this set has separate board thank god?! or not...) the backlight comes on. After reattaching nothing besides red light.... Can anyone from the forum help me here? Thank you in advance. Here's a link with images of the mainboard and the memory IC's that are on it.

Regards, Norbert!...
- Channel: Troubleshooting TVs and Video Sources
Yesterday, 06:54 AM
Lenovo Legion 5 Pro (R9000P ARX8)

by dimondimonich

Hi guys! We need a bios dump.
Model Legion 9000 PRO 8 (2023)
s/n PF4T63Y1
I downloaded the bios on the official Lenovo website
It is not possible to fill it with a programmer on a flash drive
In the original flash drive, the file weight is 2 MB.
Please help me)
- Channel: BIOS Requests ONLY!
Yesterday, 06:36 PM
Wharfedale Movie Star 70+ Schematic Required.

by hemant_2222

Hello Friends,

Greetings!

I have taken this active subwoofer from Wharfedale for restoration. This is already in a bad shape as far as the connections goes. It has already been worked by local technicians. The most important part that I am looking forward is the schematic diagram, as there is jumper placed and a track has been cut, as if to bypass the actual connection. I am not sure if this is by design or someone has tried something to achieve.

Another thing is the TDA7294 was badly treated with its legs cut and it had a crack too, so I have replaced it...
- Channel: Schematic Requests ONLY!
Today, 01:17 AM
820-00165 no backlight

by vinzmt

hi to all
i have this logic board with no back light, image is present.
unknow istory.

on q7707 pin 5 EDP_BKLT_EN found 3.3 v, pin 1 gnd damage, pin 2 BKLT_PLT_RST_L only 0.08v (but is 3.3 on r2088 pin 2)
remove q7707 and find this

any suggestions?
thanks...

1 Photo
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 07:05 AM
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
Yesterday, 04:25 PM
Samsung/UN65H6300AF LOGO APPEARS AND SHUTS OFF

by Super360

Hi as you can see from title, I have a samsung tv here that will show the smart tv logo and then no picture after that even hitting input or menu on remote and shows nothing but the backlight still appears to be on. The tv will turn itself off after a minute or so automatically. I'm somewhat confused if this is either a eeprom problem or a bad led strip problem. The power supply makes a pretty noticeable humming sound when it's turned on leading me to believe one of the leds are shorted but idk honestly. Any of you guys have any help for me? I have a good multi meter and can take pictures of whatever...

4 Photos
- Channel: Troubleshooting TVs and Video Sources
04-13-2024, 10:05 PM
Samsung UN70TU6980FXZA no sound no picture but does have backlights

by stinger

When I turn tv on, the backlights come on but there is no sound or picture. I have read that these tv's have problems with the panels going bad but the "no sound" has me questioning if the main board is bad. Is there a way to troubleshoot the main board to determine if that is the problem?
- Channel: Troubleshooting TVs and Video Sources
Yesterday, 03:06 PM
Help me identify this component - HP Spectre 14-ea0023dx

by trepachka

See attached image. It says "X322" on it. This is a follow-up to my previous posted topic. The issue is upon lid closing, the screen turns off. When lid is opened, the screen remains dark.

This component is positioned right on the edge of the motherboard and has like a cradle made inside the case. I am assuming this component is used as a lid close sensor.

Please, help me identify it. Thank you....
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
04-16-2024, 03:26 PM
please help friends x1 yoga 7th no display beep melody thank you

by fredyjbi

please help friends x1 yoga 7th no display beep melody thank you...
- Channel: BIOS Requests ONLY!
Yesterday, 03:14 AM
latitude 5300 with password

by msnessay

latitude 5300 with password i5 8th

it have 2 chips

W25Q128BV and W25Q64BV

8 MB

service tag is 8FC8...
- Channel: BIOS Requests ONLY!
09-26-2020, 10:39 PM

Announcement

Badcaps Electronics Repair Forum & Schematic Search

What's Going On?

Badcaps Statistics

Latest Topics

Trending

Announcement

Badcaps Electronics Repair Forum & Schematic Search

What's Going On?

Badcaps Statistics

Latest Topics

Tag Cloud

Trending