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: 236 Posts: 41,916

Last Post: New Members - please post your introductions here

236

41,916

New Members - please post your introductions here

by Zenmanic

Today, 01:20 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: 3,185 Posts: 32,699

Last Post: Help Identifying a Tantalum Capactior!!!!! 68 C79 Please help!!

3,185

32,699

Help Identifying a Tantalum Capactior!!!!! 68 C79 Please help!!

by redwire

Yesterday, 02:15 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: 4,497 Posts: 74,845

Last Post: Converting HP EliteBook 840 G7 non-touch to touch if possible

4,497

74,845

Converting HP EliteBook 840 G7 non-touch to touch if possible

by trepachka

Yesterday, 06:32 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: 3,974 Posts: 44,349

Last Post: Desoldering gun station modified to use a 18 volt @ 20 amp switching power supply

3,974

44,349

Desoldering gun station modified to use a 18 volt @ 20 amp switching power supply

by sam_sam_sam

Yesterday, 06:40 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: 6,815 Posts: 37,323

Last Post: Schematic / board view - MSI B450 Gaming Plus Max

6,815

37,323

Schematic / board view - MSI B450 Gaming Plus Max

by rattale

Yesterday, 10:38 PM

Sub-Forums:

BIOS & Schematic Requests! (2,683/16,296)

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: 5,444

Last Post: Help Identifying ASUS ROG Rapture GT-AXE16000 Board Components

501

5,444

Help Identifying ASUS ROG Rapture GT-AXE16000 Board Components

by kujoswrath

04-30-2024, 02:21 PM

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: 31,898 Posts: 304,220

Last Post: Lenovo Gaming 3 15ARH05 NM-D191 BIOS please

31,898

304,220

Lenovo Gaming 3 15ARH05 NM-D191 BIOS please

by piszpunta

Today, 02:10 AM

Sub-Forums:

BIOS Requests ONLY! (12,712/153,343)

Schematic Requests ONLY! (4,740/28,501)

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: 5,322 Posts: 75,706

Last Post: Asus VG278 mosfet identification ?

5,322

75,706

Asus VG278 mosfet identification ?

by momaka

Yesterday, 12:50 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: 27,454 Posts: 374,768

Last Post: JVC lt-32hg35e (Vestel) blinking LED

27,454

374,768

JVC lt-32hg35e (Vestel) blinking LED

by vinceroger69

Today, 01:04 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: 4,181 Posts: 65,236

Last Post: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

4,181

65,236

PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

by psina

Today, 01:10 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: 1,665

Last Post: Epson l3110 dump

301

1,665

Epson l3110 dump

by hardwaretaj

04-28-2024, 05:52 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: 2,326 Posts: 27,465

Last Post: Pioneer amplifier A-205 Relay not clicking after a mistake i made

2,326

27,465

Pioneer amplifier A-205 Relay not clicking after a mistake i made

by GraphicMan

Yesterday, 09:10 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: 223 Posts: 3,909

Last Post: Eneloop/Panasonic BQ-CC63 charger - noisy PWM IC

223

3,909

Eneloop/Panasonic BQ-CC63 charger - noisy PWM IC

by redwire

05-05-2024, 10:18 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: 1,002 Posts: 10,874

Last Post: Elektronika EPOS-73A stuck with fixed display

1,002

10,874

Elektronika EPOS-73A stuck with fixed display

by carlitosbala

Today, 01:19 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: 1,378 Posts: 19,399

Last Post: anyone recommend an earth leakage clamp meter ?

1,378

19,399

anyone recommend an earth leakage clamp meter ?

by petehall347

Yesterday, 05:31 PM

Mark Channels Read

Turtle Beach Velocity one flight universal control system

by ImpossibleRepairs

Hi Good peoples;

Been working on a turtle beach Velocity one flight controller; The slide pot for the throttle (black) isn't calibrating properly, it will register the axis with some wriggle until pressure is released;

Does anyone know the specifics for these Potentiometers?? I have attached photos;

Board number is LBX-19500，
C-V1.1 202011

please and thanks as always

2 Photos
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Today, 02:19 AM
Legion Y540 Bios Password Reset

by NootABoot

I created a supervisor password for my laptop a while back and I forgot it. It can't be reset by resetting CMOS. Can I extract it from a BIOS dump or through another method without a bios/eeprom programmer?
- Channel: BIOS Requests ONLY!
05-05-2024, 09:10 PM
Lenovo Yoga C940-15IRH No primary Screen

by Noursa

Hello

I'am a beginner in electronics repair and i got some trouble to find what's goning on a computer. It is a lenovo yoga C940-15IRH laptop and the screen doesn't work anymore, but that work on an external one

the screen seams to be hard to unbuild properly so i want to test it by other way

how can i be sure if the signal is really send to the screen ? i did some check on screen connector on LCD1 got 19v and on MiC1 connector on the other side of the screen (dunno if it's for the screen itself or other thing) got a lot of 3.2v pin

did u got...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
05-04-2024, 10:00 AM
rx6600xt

by Franito

I have a rx6600xt in the same situation.
The first pin of npc81022 ( powerok) has 0 v, and doesn't activate the other and gates.

I'm not sure if I can bridge with powergoods.

I don't have the schematic for this gpu sapphire, and i dont know why I don't have power ok if all coils are marking good voltages.

¿Maybe gpu core dead?
I see in a msi schematic powergood and powerok are bridged wwith a resistance, but in my gpu this place is empty....
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
05-04-2024, 06:16 AM
unlock BIOS unowhy Y13 2021

by atmega4

please i need unlock BIOS unowhy Y13 2021
Production year : Aout 2021
Model : Y13G011S4EI
Motherboard : EM_IG116_200b_ene_F_V1.0...
- Channel: BIOS Requests ONLY!
Yesterday, 03:59 PM
No Backlight Macbook A1990 820-01041

by Comp_Pro

Hello all,

Am trying to figure out this backlight issue with this A1990 Macbook Pro.

Tests performed:

There is no backlight even with a good screen.
Backlight IC is receiving the correct support voltages.
Fuse F8400 ok
Current sense resistor R8400 ok
Backlight IC is receiving 3.3V on enable pin.
Backlight IC receiving voltage from PPBUS_G3H, aprox 12.5V.
Backlight IC receiving 5V from PP5V_G3S
Backlight IC BKLT_SCL and BKLT_SDA both measure 0.545V diode mode to ground
I2C_BKLT_SCL and I2C_BKLT_SDA both measure...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 10:23 PM
JVC lt-32hg35e (Vestel) blinking LED

by unimatrix93

Dear forum,

I'm stuck with this old TV unit.
PSU: 17PW04-1
MB: 17MB62-1
Symptoms:
- Blue LED constantly blinking when connected to AC.
- Only sigh of life is beeping when touching the capactive buttons on the front.

Diagnostics so far:
Checked the PSU output voltages:
12V present
5V present altought its only around 4.2V
3V is present measured 3.4V.

I check TP 202 which is for the short circuit protection: 0.606V on diode mode

Since I met with some vestel models before with similiar symptoms...
- Channel: Troubleshooting TVs and Video Sources
05-03-2024, 03:18 AM
upgrade 8gb on board ram in my dell 5290 2 in 1

by Mr.heinrich

Greetings, i just decide to upgrade 8gb on board ram in my dell 5290 2 in 1, is it possible if i just swap the ram chip to 16gb or i should swap the other else like resistor or something. Please help me guys, thank you.

Just for information, my dell 5290 2 in 1 is using SAMSUNG K4E8E324EB-EGCF chip, this is 8gb chip ram.

SERVICE TAG: 160LHR2

Thank you so much.

I'm so sorry if my english isn't clearly.
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
05-05-2024, 08:56 AM
LG Gram 17Z90Q identify component labeled BACDSG

by abajor

Trying to identify this part if anybody has any idea what it might be, would be a good start to repairing this laptop....
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
04-24-2024, 03:08 PM
HP Elitebook 2540p - WP884AW#ABU - won't start!

by smaniak

The laptop won't start. When plug power supply, on 19V in gives me 0,14A, without turning on the laptop.
I check it with thermal camera, and there is one resistor that is very hot, I change the resistor with new on but the result is the same.
In the attachment there is schematic of the resistor area, and schematic of the laptop.
I can't understand, why this resistor is getting so hot....
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
05-05-2024, 01:24 AM

please help friend's thinkpad T480 NM-b501 dead, VSYS_OUT 9.2v, thank you

by fredyjbi

Please help sir, this board does not turn on because VSYS_OUT is 9.2v, I compared it with a normal board VSYS_OUT is 10.2v, I have replaced the PQ101 and PQ102 mosfet and BQ 25700 which is known to be good, but the results are still the same, thank you

VSYS_OUT 9.2v
Meter in resistance mode auto range 6M ohm ok

NORMAL BOARD VSYS_OUT 10.2V

PQ101
PIN 2 20V
PIN 7 0.004V
PIN 6 6V
PIN 5678 0V

PQ102
PIN 567 0V
PIN 9 0.004V
PIN 234 9.2V (VSYS_OUT)

PU101 BQ25700ARSNR
1 VBUS 20V...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 10:48 AM
What is this component

by EazyBone

Shown in picture, trying to replace a MOSFET and looks like I knocked this off, in guessing it's the same as one next to it. Has 1.8 Mohms. Any way to bypass it? It's on the hot side

The component circled is the one there, the arrow is I think another of same component?

2 Photos
- Channel: Troubleshooting TVs and Video Sources
Yesterday, 11:47 AM
Turtle Beach Velocity one flight universal control system

by ImpossibleRepairs

Hi Good peoples;

Been working on a turtle beach Velocity one flight controller; The slide pot for the throttle (black) isn't calibrating properly, it will register the axis with some wriggle until pressure is released;

Does anyone know the specifics for these Potentiometers?? I have attached photos;

Board number is LBX-19500，
C-V1.1 202011

please and thanks as always

2 Photos
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Today, 02:19 AM
No Backlight Macbook A1990 820-01041

by Comp_Pro

Hello all,

Am trying to figure out this backlight issue with this A1990 Macbook Pro.

Tests performed:

There is no backlight even with a good screen.
Backlight IC is receiving the correct support voltages.
Fuse F8400 ok
Current sense resistor R8400 ok
Backlight IC is receiving 3.3V on enable pin.
Backlight IC receiving voltage from PPBUS_G3H, aprox 12.5V.
Backlight IC receiving 5V from PP5V_G3S
Backlight IC BKLT_SCL and BKLT_SDA both measure 0.545V diode mode to ground
I2C_BKLT_SCL and I2C_BKLT_SDA both measure...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 10:23 PM
Help reading schematic voltages input/output

by gjgib

Hello, this might be embarassing since I consider it a dumb question but keeps me kinda stuck sometimes in my journey.

I want to know if there is any post in this forum which explains my questions. [B]A)[/B] [B]When, where and how do I know when X voltage line is input or output. Example: [/B]

[URL=filedata/fetch?id=3266119&d=1715040463][ATTACH=JSON]{"alt":"Click image for larger version Name:\timage.png Views:\t0 Size:\t151.9 KB ID:\t3266119","data-align":"none","data-attachmentid":"3266119","data-size":"thumb"}[/ATTACH][/URL]...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 08:11 PM
HP Elitebook 2540p - WP884AW#ABU - won't start!

by smaniak

The laptop won't start. When plug power supply, on 19V in gives me 0,14A, without turning on the laptop.
I check it with thermal camera, and there is one resistor that is very hot, I change the resistor with new on but the result is the same.
In the attachment there is schematic of the resistor area, and schematic of the laptop.
I can't understand, why this resistor is getting so hot....
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
05-05-2024, 01:24 AM
unlock BIOS unowhy Y13 2021

by atmega4

please i need unlock BIOS unowhy Y13 2021
Production year : Aout 2021
Model : Y13G011S4EI
Motherboard : EM_IG116_200b_ene_F_V1.0...
- Channel: BIOS Requests ONLY!
Yesterday, 03:59 PM
BIOS request for ASUS x415dap

by techrefurbca

Hi,

It is my first BIOS request here.
I have a bios-locked AUS M415D

ASUS X415DAP

1 Photo
- Channel: BIOS Requests ONLY!
Yesterday, 07:17 PM
Legion Y540 Bios Password Reset

by NootABoot

I created a supervisor password for my laptop a while back and I forgot it. It can't be reset by resetting CMOS. Can I extract it from a BIOS dump or through another method without a bios/eeprom programmer?
- Channel: BIOS Requests ONLY!
05-05-2024, 09:10 PM
Recommend a decent Multimeter on the cheap

by aaronkatrini

Hi all,

I was looking to upgrade my main multimeter (Asita MD591) with something that has more features. I'll use it mostly for board diagnostic and diy repairs. I've been eyeing out many of those multi-function ones from Aliexpress but can't seem to make my mind up. Here are the features that I'm looking after:

- Autorange
- DC volts up to 30V
- Accurate Resistance
- Diode test (Beep mode)
- Frequency up to 200MHz
- Capacitanze up to 5000uF
- as cheap as possible

Other functions are not needed but those which are needed...
- Channel: Equipment Usage, Soldering, Techniques, and Reviews
Yesterday, 09:54 AM

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