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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?

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: 235 Posts: 41,760

Last Post: New Members - please post your introductions here

235

41,760

New Members - please post your introductions here

by barber

Yesterday, 08:21 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: 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: 3,183 Posts: 32,691

Last Post: Cheap Aliexpress Capacitor: Much smaller than original. Safe to use?

3,183

32,691

Cheap Aliexpress Capacitor: Much smaller than original. Safe to use?

by stj

04-28-2024, 03:09 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: 74,818

Last Post: Alienware 17 R4 Bios/Admin password

4,497

74,818

Alienware 17 R4 Bios/Admin password

by Xtreme5739

Today, 05:28 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: 3,968 Posts: 44,306

Last Post: Citronic AC-1USB Output Too Loud

3,968

44,306

Citronic AC-1USB Output Too Loud

by Carm99

Today, 12:42 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: 6,803 Posts: 37,245

Last Post: HP 400 G9 MINI bios

6,803

37,245

HP 400 G9 MINI bios

by SMDFlea

Today, 03:33 PM

Sub-Forums:

BIOS & Schematic Requests! (2,676/16,249)

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

Today, 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: 31,821 Posts: 303,268

Last Post: Quanta DA0R05MB8D2 Rev. D (Quanta R05 / Dell 14z-N411z) schematics needed

31,821

303,268

Quanta DA0R05MB8D2 Rev. D (Quanta R05 / Dell 14z-N411z) schematics needed

by romo

Today, 05:22 PM

Sub-Forums:

BIOS Requests ONLY! (12,680/152,714)

Schematic Requests ONLY! (4,726/28,430)

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: 5,320 Posts: 75,698

Last Post: Asus VG278 mosfet identification ?

5,320

75,698

Asus VG278 mosfet identification ?

by guizmo1967

Today, 05:36 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: 27,441 Posts: 374,634

Last Post: Verticle lines on Samsung PN42A400 Plasma TV

27,441

374,634

Verticle lines on Samsung PN42A400 Plasma TV

by xNOTx

Today, 04:22 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: 4,180 Posts: 65,219

Last Post: Can i plug pc on this apartment with older fuse box?

4,180

65,219

Can i plug pc on this apartment with older fuse box?

by momaka

Today, 02:14 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: 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: 2,317 Posts: 27,427

Last Post: Pioneer DEX-P99rs "No EEProm " diagnostic code.

2,317

27,427

Pioneer DEX-P99rs "No EEProm " diagnostic code.

by dmccul2698

Yesterday, 09:06 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: 222 Posts: 3,897

Last Post: repairing 360 s6 vacume cleaner robot with stuck radar

222

3,897

repairing 360 s6 vacume cleaner robot with stuck radar

by CapLeaker

Yesterday, 08:19 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: 1,001 Posts: 10,868

Last Post: DJI FPV goggles, dead backlight

1,001

10,868

DJI FPV goggles, dead backlight

by snowphish

Today, 10:43 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: 1,376 Posts: 19,385

Last Post: anyone recommend an earth leakage clamp meter ?

1,376

19,385

anyone recommend an earth leakage clamp meter ?

by redwire

Today, 12:13 PM

Mark Channels Read

Asus VG278 mosfet identification ?

by guizmo1967

Hello,

My Asus monitor stop working today !! I found the problem on the main board, the power supply board is ok. It's Q9, a mosfet but I have no idea what are the specs since I don't have the schematic for that monitor !!

Can someone help me identified this mosfet ?

Thank you !

1 Photo
- Channel: Troubleshooting Computer Displays
04-16-2024, 01:15 PM
Alienware 17 R4 Bios/Admin password

by Xtreme5739

Bought from a liquidator and nonworking on Ebay, and has a admin password set. Dell generated a code that didn't work, then said there is nothing else they could do. I've tried desoldering and flashing a bios, but wouldn't boot afterwards(beyond my limits). I reflashed my backup and it works again. I wrote a password cracker in powershell, but never got a hit. Not sure what else I can do.

Alienware 17 R4
Service Tag: D154PH2

Thank you for anyone that can help.
- Channel: General Computer & Tech Discussion
Today, 05:28 PM
Acer Sf314-41 power issue

by claws77

my laptop has a weird power-on issue.
Once the laptop has been powered on, it can restart/ wake just fine on battery power or Adapter, ONLY If i have not closed the LCD.
If i am running on battery and have closed the LCD (even momentarily). it will not power-on/ wake-up on battery power no matter the battery percentage.

but once i open the LCD and connect it to the adapter (even momentarily) it will wake up gain and I wont experience any issues till i close the LCD.

i do not know where to look for repair.
thank you all for any advice.
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 04:36 PM
Verticle lines on Samsung PN42A400 Plasma TV

by xNOTx

Hello 👋 I have a tv with these red lines. I've tried cleaning and re-seating the ribbon cables but no luck! Tried all 4 on the LJ92-01485 board and on the bottom of the panel. Do you guys think it's the board?|
[Edit] I don't know why the thumbnails aren't linking to the full images, but here is the gallery. [url]https://postimg.cc/gallery/WZcFzyf[/url]

[URL=https://postimg.cc/bZhnsDWs][/URL]

[URL=https://postimg.cc/BjBKDZfN][/URL]https://Hello 👋 I have a tv with the...Tried all 4 on...
- Channel: Troubleshooting TVs and Video Sources
Today, 04:22 PM
Lenovo L340-15IRH fg541/fg741 nm-c362 rev 1.0 No power

by tommy97

Hi,

i've got for repair Lenovo L340-15IRH fg541/fg741 nm-c362 rev 1.0, laptop have instant short 20v 0.20amp draw, lv5083a goes to 100degree, i've removed 1 shorted cap next to the IC and short still remain, from look of it short comes from legs 16-25, i can't find what this IC i believe is 3/5V regulator?

First mosfets normal 20v Source and drain and Gate 25v...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 11:43 AM
Lenovo l340 Missing caps help

by GeorgeR

I have an Lenovo l340 that has two missing caps on the motherboard. How can I find the value of the caps so I can replace them.
thank you in advance.
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 01:49 AM
Samsung LH82QENELGC/EN Help needed - Static line on screen

by Kiberge

HI guys!

I've got a Samsung LH82QENELGC/EN with a problem and need some advice and I hope this is the forum to use?
I'm from Norway so I'd like to apology in advance if my description of the fault is kind of simple or the names on the components are way off. 😊

the TV is powering up, working as normally and picture is all good, except a 1.5-inch-wide vertical line of snow/static across the screen.

This TV is a Signage Display/Public Display version and it's been used at my work for 4-5 years showing commercials 24/7. The fault occurred when...
- Channel: Troubleshooting TVs and Video Sources
04-22-2024, 11:28 AM
Palit RTX 3060 Possessed fan .. Intermittant control

by 90Ninety

So I purchased a faulty GPU on ebay Palit RTX 3060 .. It had a broken fan ( it did not spin at all )

Long story short , is the PWM control of the Card seems to be intermittantly faulty

Long story
I replaced said fan , seemed to work for a while , until randomly the fan starts spinning at 100% ( around 3.2K RPM ) for no rational reason ( temps and performance are ok ) . Now fan spins , though several times a day the fan decides to run at 100% for several minuites a time .. Then resumes normal operating ..

bear in Mind the card can be cooled sufficiently...
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
04-28-2024, 02:30 PM
Apple iPad Pro 12,9" 4Gen no charging, but working fine

by waterchill

Hey folks, I have this iPad Pro 12,9" 4Gen A2232 here with no charging issue. The main fault was a crossed pins / faulty USB charging port due a bad cable.

So I started to replace this parts:

- replaced usb-c port -> no result
- replaced battery -> no result
- replaced usb-c chip CD3217B12A -> no result
- replaced 343S00326 -> no result
- replaced 343S00327 -> no result
- replaced 343S00328 -> no result

I have no more ideas for this issue. There is no short on the whole board, and the iPad is working fine...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 05:37 AM
IdeaPad Gaming 3 15ARH7 - No Power or Charge

by grimacelord

Hello,

I've been working on this laptop for a few hours and I am stumped. Still learning this kind of troubleshooting. Hoping someone can help.

[U][B]Computer Information:[/B][/U]
Model: Lenovo IdeaPad Gaming 3 15ARH7
Motherboard model: NM-E211 Rev: 1.0
Schematic, Boardview, & FlexBV Free - Attached

[U][B]Problem:[/B][/U]
The computer does not charge the battery or power on also does not power on with power adapter only. Battery have no charge on it at all (reading mV on battery charge). When connecting the power adapter...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 01:27 PM

HP 14-dq0055dx - BIOS problem - "Pending Image Being Cleared" Loop

by grimacelord

Hello,

I have an HP 14-dq0055dx laptop here that came in for boot looping. It was previously taken to another shop and they tried flashing a BIOS firmware to the chip, so I cannot take an original dump. For a second or two, a message will come up on the screen that says:

This loop will go on for as long as you like. I let it run for about 12 hours and came in the following morning and it's still looping.

Motherboard model number: DA0PAMB46A1 REV: A
Secondary motherboard model number: 0PAB
SKU: 685K4UA

Attached is the latest...
- Channel: BIOS Requests ONLY!
Today, 09:11 AM
macbook a1707 15 inch trackpad dead. blown fuse identification

by dellxps15

hi all, got this macbook with dead trackpad. after some investigation i found that fuse is bwlown. it's marked with a K on it. anyone kjnow it's value ? it is a 0402 package.

another problem is: i tried another trackpad that was working fine, but the feedback sensor was not. all volts are present, but the click mechanism isnt .

4 Photos
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 10:48 AM
Lenovo L340-15IRH fg541/fg741 nm-c362 rev 1.0 No power

by tommy97

Hi,

i've got for repair Lenovo L340-15IRH fg541/fg741 nm-c362 rev 1.0, laptop have instant short 20v 0.20amp draw, lv5083a goes to 100degree, i've removed 1 shorted cap next to the IC and short still remain, from look of it short comes from legs 16-25, i can't find what this IC i believe is 3/5V regulator?

First mosfets normal 20v Source and drain and Gate 25v...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 11:43 AM
Apple iPad Pro 12,9" 4Gen no charging, but working fine

by waterchill

Hey folks, I have this iPad Pro 12,9" 4Gen A2232 here with no charging issue. The main fault was a crossed pins / faulty USB charging port due a bad cable.

So I started to replace this parts:

- replaced usb-c port -> no result
- replaced battery -> no result
- replaced usb-c chip CD3217B12A -> no result
- replaced 343S00326 -> no result
- replaced 343S00327 -> no result
- replaced 343S00328 -> no result

I have no more ideas for this issue. There is no short on the whole board, and the iPad is working fine...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 05:37 AM
Alienware 17 R4 Bios/Admin password

by Xtreme5739

Bought from a liquidator and nonworking on Ebay, and has a admin password set. Dell generated a code that didn't work, then said there is nothing else they could do. I've tried desoldering and flashing a bios, but wouldn't boot afterwards(beyond my limits). I reflashed my backup and it works again. I wrote a password cracker in powershell, but never got a hit. Not sure what else I can do.

Alienware 17 R4
Service Tag: D154PH2

Thank you for anyone that can help.
- Channel: General Computer & Tech Discussion
Today, 05:28 PM
Acer Sf314-41 power issue

by claws77

my laptop has a weird power-on issue.
Once the laptop has been powered on, it can restart/ wake just fine on battery power or Adapter, ONLY If i have not closed the LCD.
If i am running on battery and have closed the LCD (even momentarily). it will not power-on/ wake-up on battery power no matter the battery percentage.

but once i open the LCD and connect it to the adapter (even momentarily) it will wake up gain and I wont experience any issues till i close the LCD.

i do not know where to look for repair.
thank you all for any advice.
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 04:36 PM
Verticle lines on Samsung PN42A400 Plasma TV

by xNOTx

Hello 👋 I have a tv with these red lines. I've tried cleaning and re-seating the ribbon cables but no luck! Tried all 4 on the LJ92-01485 board and on the bottom of the panel. Do you guys think it's the board?|
[Edit] I don't know why the thumbnails aren't linking to the full images, but here is the gallery. [url]https://postimg.cc/gallery/WZcFzyf[/url]

[URL=https://postimg.cc/bZhnsDWs][/URL]

[URL=https://postimg.cc/BjBKDZfN][/URL]https://Hello 👋 I have a tv with the...Tried all 4 on...
- Channel: Troubleshooting TVs and Video Sources
Today, 04:22 PM
IdeaPad Gaming 3 15ARH7 - No Power or Charge

by grimacelord

Hello,

I've been working on this laptop for a few hours and I am stumped. Still learning this kind of troubleshooting. Hoping someone can help.

[U][B]Computer Information:[/B][/U]
Model: Lenovo IdeaPad Gaming 3 15ARH7
Motherboard model: NM-E211 Rev: 1.0
Schematic, Boardview, & FlexBV Free - Attached

[U][B]Problem:[/B][/U]
The computer does not charge the battery or power on also does not power on with power adapter only. Battery have no charge on it at all (reading mV on battery charge). When connecting the power adapter...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 01:27 PM
Latitude 7400 EDB41 LA-G441P

by sito

Please anyone can help with this bios,y laptop is stuck in logo...
- Channel: BIOS Requests ONLY!
Today, 06:11 AM
ASUS MB GPU NO DETECT

by pooya_pm

PLS HELLP ME...
- Channel: BIOS Requests ONLY!
Today, 01:12 AM

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