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Badcaps Capacitor & Electronics Repair Forum

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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: 233 Posts: 43,537

Last Post: New Members - please post your introductions here

233

43,537

New Members - please post your introductions here

by djdhusy

Yesterday, 09:57 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: 4 Posts: 10

Last Post: IT8516E need datasheet

IT8516E need datasheet

by kasun nirosh

07-22-2024, 11:00 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: 3,206 Posts: 32,841

Last Post: 0.00 ESR reading on a capacitor

3,206

32,841

0.00 ESR reading on a capacitor

by stj

Today, 01:49 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: 4,524 Posts: 75,022

Last Post: Asus laptop just stuck at random time

4,524

75,022

Asus laptop just stuck at random time

by Dreigas

Today, 05:58 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: 4,028 Posts: 44,866

Last Post: ULN2003 IC replacement

4,028

44,866

ULN2003 IC replacement

by Askic

Today, 12:22 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: 7,033 Posts: 38,657

Last Post: need clean bios for imac A1418

7,033

38,657

need clean bios for imac A1418

by madjid911

Today, 04:15 AM

Sub-Forums:

BIOS & Schematic Requests! (2,813/17,237)

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: 507 Posts: 5,499

Last Post: Tplink RE600x wifi extender

507

5,499

Tplink RE600x wifi extender

by labello

Today, 05:58 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: 32,945 Posts: 317,801

Last Post: HP ENVY Laptop 17-cg1008ca Motherboard GPT70 LA-J504P

32,945

317,801

HP ENVY Laptop 17-cg1008ca Motherboard GPT70 LA-J504P

by ylrah

Today, 08:30 AM

Sub-Forums:

BIOS Requests ONLY! (13,121/162,314)

Schematic Requests ONLY! (4,942/29,509)

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: 5,343 Posts: 75,821

Last Post: AOC Monitor Model C27G2

5,343

75,821

AOC Monitor Model C27G2

by Farvald

07-25-2024, 01:07 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: 27,588 Posts: 376,239

Last Post: Vizio E701i-A3 Vizio logo flashing then turns off

27,588

376,239

Vizio E701i-A3 Vizio logo flashing then turns off

by Super360

Yesterday, 09:23 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: 4,214 Posts: 65,542

Last Post: Cooler Master 500W atx psu repair. Total cannot start at all

4,214

65,542

Cooler Master 500W atx psu repair. Total cannot start at all

by anikin73

Today, 06:53 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: 309 Posts: 1,698

Last Post: canon TS207

309

1,698

canon TS207

by eulah

07-25-2024, 06:43 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: 2,365 Posts: 27,718

Last Post: Marshall Emberton

2,365

27,718

Marshall Emberton

by Phil916

Today, 07:39 AM

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: 242 Posts: 4,133

Last Post: Grundig High Performance Cyclone Battery Led blinking

242

4,133

Grundig High Performance Cyclone Battery Led blinking

by Nick868

Today, 05:00 AM

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: 1,043 Posts: 11,189

Last Post: PS5 - long screw damage, via to ground layer short?

1,043

11,189

PS5 - long screw damage, via to ground layer short?

by Prott

Today, 08:54 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: 1,391 Posts: 19,593

Last Post: Owon HDS2202S oscilloscope

1,391

19,593

Owon HDS2202S oscilloscope

by R_J

07-25-2024, 06:55 PM

Mark Channels Read

Sharp Aquos LC-40UG7252E LCD TV burn in?

by jonah1024

Hello!

I'm a few days old into this TV screens repair universe so please bear with me.

Recently, and all of a sudden my 40” 4K Sharp Aquos LCD TV turned on with colors all smudged in some places on the screen that remain like that even without any kind of video source. I do have image but the colors are smudged/tinted/ washed out in patches as per defects. This to me looks similar to burn in but I’m shore this is not an OLED.

- I did the classic unplug and hold power button to discharge the caps but it didn't help.
- I did a factory reset as well...

5 Photos
- Channel: Troubleshooting TVs and Video Sources
07-16-2024, 04:23 AM
A2442 - No sound over internal speakers and no video playback

by soeren

I am facing a strange issue, I don't have any sound over my internal MacBook speakers and also the video won't start. If I change to my head speaker or via HDMI (speaker on my external Display) the sound works over the head speaker or Display and also the video starts (ex. youtube).

All happened after the battery ran out of power overall several days when I was on vacation.

I tried to remove the battery and then reconnected the battery, and then the MacBook Pro 14 2021 won't accept any power from my power socket. Then I removed one speaker, connected again the battery...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 01:24 AM
PS5 - long screw damage, via to ground layer short?

by Prott

Hello dear Badcappers,
I came across a PS5 that was longscrewed. The screw went through the HDMI IC ([I]which I replaced + repaired the traces it damaged[/I]), however the screw also bend the board and slightly cracked it on the other side. It still seems like it could be fixable though as the area might not have lots of traces going through it (fingers crossed).

Can somebody, please, measure their board and tell me if my assumption of an inner short between the via and ground layer is correct? These 3 pads have almost no resistance. I would like to make sure those are not some...

2 Photos
- Channel: Troubleshooting Game Consoles & Other Weird Devices
Today, 08:54 AM
Sony Bravia KD-50X690E blown resistor

by x_orange90_x

I just picked up this tv yesterday and the previous owner said while watching tv he heard a loud a pop and then the screen went dark. I removed the back cover and found the source rather quickly; resistor R8601. A chunk of the ceramic had blown off exposing the inner wire. Due to the damage I cannot make out the colors of a couple bands. I likewise cannot find a datasheet for the power supply. I tried pulling up pictures of the same board online but the resistors have different colored bands which I half expected as I've had this happen before.

The power supply is 715G8413-P01-001-0H2S...
- Channel: Troubleshooting TVs and Video Sources
07-16-2024, 06:53 AM
Asus U31F half screen

by Rudolfl

Hi all

This one is a bit strange. Never saw problem like this before. Picture is shifted half screen. See photo.
My gut feel tells me it is the panel. Am I right?

Rudolf...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 07:21 AM
monowheel repair,Is the diode the problem?

by NicRac

Hello everybody☺️ I am glad to be here and looking forward to a good discussion.

First of all, I am new here. Therefore I will shortly introduce myself.
I am Nico and currently I study Physics.
In my freetime I like to build and repair stuff. Especially big battery's.

A few years ago I got myself an electric unicycle, monowheel or however you call that.
The battery bms was broken so I replaced and resolder that. Nothing big.
I used this thing for some years and had a lot of fun. Unfortunately I used it last time in heavy rain. Usually everything...

5 Photos
- Channel: Troubleshooting Game Consoles & Other Weird Devices
Yesterday, 06:13 AM
Cooler Master 500W atx psu repair. Total cannot start at all

by anikin73

I am attempting to repair this. Circuit is quite simple, but i a quite stuck at it for a long time. so today i try to ask for new ideas. my challenge is to under stand what mistake i made. I had repaired not lesson than 50 pcs of various brands ATX psu . main pwm chip is Cm 6805 Sip 9 .
5VSB is fine. When I short Pson, totally nothing happen. I check , the Cm 6805 VCC pin2 did have 16v, But totally nothing happen. I changed to a good chip from another good PSU. Same thing.
What other pin should I check such that it will result in no start up at all ?

[A...
- Channel: Troubleshooting Power Supplies and Power Supply Design
07-07-2024, 07:06 AM
Vizio E701i-A3 Vizio logo flashing then turns off

by Super360

Ok so here's the story. I was watching tv one day when all of a sudden I heard a pop from the back of the tv set and rushed to unplug the set. By this time the tv already had smoke coming out the back. It was not storming or inclement weather that day to cause a power surge to the best of my abilities. When I opened the tv up, I found that the three capacitors on the psu (highlighted in red) were all bulging and looked they had exploded. I replaced all of them right away and when I went to start up the tv after the "fix" it started just showing the flashing vizio logo as soon as power...
- Channel: Troubleshooting TVs and Video Sources
07-25-2024, 07:06 PM
Asus laptop just stuck at random time

by Dreigas

Hi everyone,

I've got a problem with my Asus TUF Gaming FX506LX laptop. I bought it as a non-working unit it had been completely drenched in a sweet alcoholic drink and was left for a year... When I got it, the motherboard wasn't in terrible shape, but I had to clean a lot of areas—about 1/5 of the motherboard. There was some corrosion, but I managed to clean it up and re-soldered where I saw issues under a microscope.

One of the two primary MOSFETs was fried (PQ33 fried and PQ34 were fine), so while I was waiting for a replacement, I desoldered it and created a short....
- Channel: General Computer & Tech Discussion
Today, 05:58 AM
Tplink RE600x wifi extender

by labello

Hi guys, I have this wifi extender from 2 years ago. Itstarted to hhavesome problem like ddisconnectingalone and reconnect alone some time I must turning off wait a couple of minutes and open it to working again, anyway I opened and found some capacitor not very good then I replaced, and this kind of resistance.. It's possible I can't buy it? I mean I read the mark on the pcb but I didn't find it... It's very strange that or the problem is myself getting badly research... thank you all for your reply , your time and your help 🙏...

3 Photos
- Channel: Troubleshooting & Designing Networks
07-08-2024, 10:08 AM

Vizio E701i-A3 Vizio logo flashing then turns off

by Super360

Ok so here's the story. I was watching tv one day when all of a sudden I heard a pop from the back of the tv set and rushed to unplug the set. By this time the tv already had smoke coming out the back. It was not storming or inclement weather that day to cause a power surge to the best of my abilities. When I opened the tv up, I found that the three capacitors on the psu (highlighted in red) were all bulging and looked they had exploded. I replaced all of them right away and when I went to start up the tv after the "fix" it started just showing the flashing vizio logo as soon as power...
- Channel: Troubleshooting TVs and Video Sources
07-25-2024, 07:06 PM
PS5 - long screw damage, via to ground layer short?

by Prott

Hello dear Badcappers,
I came across a PS5 that was longscrewed. The screw went through the HDMI IC ([I]which I replaced + repaired the traces it damaged[/I]), however the screw also bend the board and slightly cracked it on the other side. It still seems like it could be fixable though as the area might not have lots of traces going through it (fingers crossed).

Can somebody, please, measure their board and tell me if my assumption of an inner short between the via and ground layer is correct? These 3 pads have almost no resistance. I would like to make sure those are not some...

2 Photos
- Channel: Troubleshooting Game Consoles & Other Weird Devices
Today, 08:54 AM
Asus U31F half screen

by Rudolfl

Hi all

This one is a bit strange. Never saw problem like this before. Picture is shifted half screen. See photo.
My gut feel tells me it is the panel. Am I right?

Rudolf...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 07:21 AM
asus tuf f17 tuf706hm hx105

by aderreda

Hello, I need the BIOS for the asus tuf f17 tuf706hm hx105
SN: N2NRCX10W68208C
CN: YSWM 24M
MFD: 2022-02
- Channel: BIOS Requests ONLY!
Yesterday, 06:45 PM
Asus laptop just stuck at random time

by Dreigas

Hi everyone,

I've got a problem with my Asus TUF Gaming FX506LX laptop. I bought it as a non-working unit it had been completely drenched in a sweet alcoholic drink and was left for a year... When I got it, the motherboard wasn't in terrible shape, but I had to clean a lot of areas—about 1/5 of the motherboard. There was some corrosion, but I managed to clean it up and re-soldered where I saw issues under a microscope.

One of the two primary MOSFETs was fried (PQ33 fried and PQ34 were fine), so while I was waiting for a replacement, I desoldered it and created a short....
- Channel: General Computer & Tech Discussion
Today, 05:58 AM
Acer A515-51 - C5V01 LA-E891P Rev 1c

by coffeebreath

laptop lights wont turn on, wont power on. When plugged in I get 0.4v-0.8v directly from the DC jack plug on the motherboard. 19v from the charger.

Thank you.
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
07-23-2024, 02:30 PM
APC Smart UPS SUA1500 does not detect AC / doesn't turn on

by CapLeaker

Sooo... I have an interesting victim today. Our special on the menu is a APC Smart UPS SUA1500. Looks like it's got Alzheimer or isn't smart anymore (dead, dumb as f@ck), but at the same time it isn't.
Battery is about a year old and they are good at a resting voltage of 26.5VDC. If I press the on button for 3 seconds it does turn the inverter on and I get 120VAC no problem at the back and the battery shows full. So it isn't the battery. It also charges the battery no problem when plugged in add that as a twist!
However if I plug it in with the battery attached it won't...
- Channel: Troubleshooting Power Supplies and Power Supply Design
Yesterday, 02:48 PM
monowheel repair,Is the diode the problem?

by NicRac

Hello everybody☺️ I am glad to be here and looking forward to a good discussion.

First of all, I am new here. Therefore I will shortly introduce myself.
I am Nico and currently I study Physics.
In my freetime I like to build and repair stuff. Especially big battery's.

A few years ago I got myself an electric unicycle, monowheel or however you call that.
The battery bms was broken so I replaced and resolder that. Nothing big.
I used this thing for some years and had a lot of fun. Unfortunately I used it last time in heavy rain. Usually everything...

5 Photos
- Channel: Troubleshooting Game Consoles & Other Weird Devices
Yesterday, 06:13 AM
A2442 - No sound over internal speakers and no video playback

by soeren

I am facing a strange issue, I don't have any sound over my internal MacBook speakers and also the video won't start. If I change to my head speaker or via HDMI (speaker on my external Display) the sound works over the head speaker or Display and also the video starts (ex. youtube).

All happened after the battery ran out of power overall several days when I was on vacation.

I tried to remove the battery and then reconnected the battery, and then the MacBook Pro 14 2021 won't accept any power from my power socket. Then I removed one speaker, connected again the battery...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 01:24 AM
Schematics tutorial

by rictechie

I'm a newbie trying to learn to repair. Now I'm learning to use schematics and based on the image I have a short on that smd capacitors and I will try to voltage inject so I can find the short. I'll just verify if I will put the positive probe on the one I encircled? Thanks in advanced...
- Channel: General Computer & Tech Discussion
Today, 12:59 AM

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