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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: 42,021

Last Post: New Members - please post your introductions here

235

42,021

New Members - please post your introductions here

by jeer weezer

Today, 08:26 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: 3,190 Posts: 32,708

Last Post: Remove capacitor without damaging the board

3,190

32,708

Remove capacitor without damaging the board

by petehall347

Today, 01:04 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: 4,498 Posts: 74,847

Last Post: To fix laptop screen vertical line by working on its EDP cable

4,498

74,847

To fix laptop screen vertical line by working on its EDP cable

by Diah

05-07-2024, 03:31 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: 3,978 Posts: 44,377

Last Post: 18V Li-Ion Battery BMS PCB Charging Protection Circuit Board Plate - won't charge

3,978

44,377

18V Li-Ion Battery BMS PCB Charging Protection Circuit Board Plate - won't charge

by sam_sam_sam

Today, 03:57 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: 6,836 Posts: 37,389

Last Post: Graphics card Schematics and Boardviews

6,836

37,389

Graphics card Schematics and Boardviews

by r2d208

Today, 06:33 PM

Sub-Forums:

BIOS & Schematic Requests! (2,691/16,337)

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: 5,453

Last Post: Fortinet 50E Slowing down internet throughput

501

5,453

Fortinet 50E Slowing down internet throughput

by CapLeaker

Today, 03:29 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: 31,971 Posts: 305,206

Last Post: Asus FA507RE need schematics.

31,971

305,206

Asus FA507RE need schematics.

by guyandpit

Today, 07:59 PM

Sub-Forums:

BIOS Requests ONLY! (12,742/153,832)

Schematic Requests ONLY! (4,750/28,554)

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: 5,324 Posts: 75,719

Last Post: Screwed onto the board. Thoughts?

5,324

75,719

Screwed onto the board. Thoughts?

by Kaz R

Today, 10:41 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: 27,461 Posts: 374,867

Last Post: Samsung UE40F5570SS -Black line and partially ghosted/blurred

27,461

374,867

Samsung UE40F5570SS -Black line and partially ghosted/blurred

by Bholu

Yesterday, 07:49 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: 4,183 Posts: 65,246

Last Post: ASUS ROG THOR 1200W PLATINUM PSU

4,183

65,246

ASUS ROG THOR 1200W PLATINUM PSU

by sam_sam_sam

05-09-2024, 07:04 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: 303 Posts: 1,670

Last Post: i need help canon g3420 error 1300

303

1,670

i need help canon g3420 error 1300

by sabri07

Today, 03:32 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: 2,328 Posts: 27,515

Last Post: Peavey PV23XO Crossover Repair and Enhancement

2,328

27,515

Peavey PV23XO Crossover Repair and Enhancement

by clearchris

Today, 09:00 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: 225 Posts: 3,916

Last Post: Sony DVD player stuck tray (DVP-SR310P)

225

3,916

Sony DVD player stuck tray (DVP-SR310P)

by bogosort

Today, 04:29 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: 1,004 Posts: 10,883

Last Post: EDM 033 caps I'd and purpose

1,004

10,883

EDM 033 caps I'd and purpose

by James Boden

Today, 01:22 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: 19,423

Last Post: Pad repair

1,381

19,423

Pad repair

by CapLeaker

Today, 09:05 PM

Mark Channels Read

Screwed onto the board. Thoughts?

by moheat

[U]Hardware Details - Samsung LC24FG70FQWXXL (C24FG70) Monitor with the board model (BN91-18169A) perhaps aka (BN41-02548A)[/U]

While wall mounting, I mistakenly picked a screw 0.5cm too big than the clearance and damaged the trace and one of the part (a capacitor, I think) on the board. Images attached.

Is this repairable or will I just have to get the entire board replaced? Please guide about this.[U]Hardware Details - Samsung LC24FG70FQWXXL (C24FG70) Monitor with the board model (BN91-18169A) perhaps aka (BN41-02548A)[/U]

While wall mounting, I mistakenly

3 Photos
- Channel: Troubleshooting Computer Displays
05-08-2024, 06:40 AM
LG 60UJ6050-UA Backlight

by m4a2t0t

I can see the image in the background with a flashlight. I have 260V on LED+ and 90V on LED -. The backlights were acting weird with my tester so I pulled the panel and one LED does take about 2 seconds before it lights up but thats it. Is the voltage at the LED connector correct?...
- Channel: Troubleshooting TVs and Video Sources
Today, 08:25 PM
Pad repair

by ImpossibleRepairs

Howdy good peoples;

looking for some advice on Pad repairs, want ti expand my skills

Working on a HP board that went for a swim; There was a short in what appeared to be the Data IC (there was corrupted data that we recovered) ;

First picture is the donor Board, clean removal;

Second picture is board im working on; As soon as I started prepping the pads to re work the IC, the damage started;

As a side note, Im using good equipment M series Thermal tronics iron with a 1.6m tip; Good quality locally produced flux, good quality...

3 Photos
- Channel: Equipment Usage, Soldering, Techniques, and Reviews
Today, 05:19 PM
Peavey PV23XO Crossover Repair and Enhancement

by clearchris

This crossover was bought new about 12 years ago, and has probably been powered on for at least 3/4 of that time. It also has a recently developed horrible sound on the second channel, sometimes it's a wub-wub-wub, sometimes it's just a hum that comes and goes. It's not noticable if something is playing (it may be gone), but it's quite noticable if there is silence.

Because of age and problems it's due for a recap. I'm also strongly considering putting in sockets to potentially replace the 12 ST TL072 opamps. For such a small device, it's still going to be over 30 screws to take...
- Channel: Troubleshooting Audio Equipment
Today, 09:00 PM
Pioneer amplifier A-205 Relay not clicking after a mistake i made

by GraphicMan

Hello guys
Because the unit is old (but only occasionally used) the loudness button causes some noise due to bad contact,
sprays did not work, so i decided to solder the pins that it connects on the pcb at the on (loudness on) position
i did that and it worked fine, i know from the bottom of my heart that the switch connects 2 pins and also d/c other 2 pins
on every position it have (6 pin switch), so i was curious what would happen if i clicked the switch off while the pins are soldered at on (so basiclly on and off at the same time), when i did so the sound is gone, nothing...
- Channel: Troubleshooting Audio Equipment
05-05-2024, 06:20 AM
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
05-06-2024, 08:11 PM
Sony Data Projector vplfh31 3LCD Blue missing

by budwich

Got this projector which has a problem with a lack of blue. Menu text is very yellow... expecting white. If I input a signal from a test disc via hdmi, a red screen image shows a uniform red as expect. Green similar while the blue does show but with non-uniformity. Looked at the in-polarizers. They are all good and clean. Running the projector to expose the light area in the prism block, shows each color well represented, all looking about the same intensity from the naked eye. Looking at the prism block itself and sending a light source back into the "out port", the individual...
- Channel: Troubleshooting TVs and Video Sources
Yesterday, 06:49 PM
Macbook Pro M1 X A2484 820-02100 short on PPvin_5vusbc23 line

by fricosu007

Hello friends, today i got an A2485 820-02100-A in a desd state, found visual short on PPVIN_5VUSBC23 line, removed tantalum capacitor, installed same same value from other donor board, now there is no short on any of the rails but when i plug either magsafe3 or usbc inget 5v stable with 0.00 amps drown, no cycle, just these steady values, board is not in dfu mode, checked with magsafe and with usbc. Only value that i find on the board is ppdcin_aon which is 5v… i dont get 3,3 aon, 3v8 aon .. all missing, where should i start looking please !...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 09:40 AM
Acer predator XB241YU Component identification

by Shulgin

Hello everyone,
I have a problem with my Acer predator XB241YU screen. When I plug it in, the startup LED turns on instantly, and I can't turn off the screen without unplugging it.
After disassembly and inspection of the electronic cards I found what looks like a broken inductor, it is marked with the letter A and is at location L58.
In the first photo you can see the broken component, in the second photo you can see where it is on the board, in the third photo you can see the silkscreen and in the fourth photo you can see the identification sticker of the main board
I...

4 Photos
- Channel: Troubleshooting Computer Displays
Today, 11:06 AM
Toshiba Satellite L50-A-14K Bios

by niconetor

Hi! I have a corrumpt bios for this laptop

Model: Toshiba Satellite L50-A-14K
Motherboard: tmt YA-4A1 E114139 Rev 2.1
H000057570

No power, only led charging

This laptop have got two winbond
25q32fvsiq and 25q16dvsig

Thanks for all reply!
- Channel: BIOS Requests ONLY!
05-07-2024, 11:10 AM

LG 60UJ6050-UA Backlight

by m4a2t0t

I can see the image in the background with a flashlight. I have 260V on LED+ and 90V on LED -. The backlights were acting weird with my tester so I pulled the panel and one LED does take about 2 seconds before it lights up but thats it. Is the voltage at the LED connector correct?...
- Channel: Troubleshooting TVs and Video Sources
Today, 08:25 PM
HP Probook 430 G2 (LA-B171P) Battery not detected

by RomanSko1

Hello, gentlmen!!!
My HP Probook 430 g2 does not detect battery. I tested the battery on another laptop and it is OK.
I believe smth is wrong with my PC ((.
Searching this forum I found some nice suggestions.
So, I tested Battery Connector pins (charger in/battery out) and here are my results:

pin_1 0v (-)
pin_2 3.30v
pin_3 0v
pin_4 3.38v (SCL)
[B]pin_5 2.55v (SDA)!!![/B]
pin_6 2.25 (+)

As far as I understand SDA pin must be ~3.3v???
Are there any other tests I can do before disassembling motherboard?
I...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 05:22 AM
Macbook Pro M1 X A2484 820-02100 short on PPvin_5vusbc23 line

by fricosu007

Hello friends, today i got an A2485 820-02100-A in a desd state, found visual short on PPVIN_5VUSBC23 line, removed tantalum capacitor, installed same same value from other donor board, now there is no short on any of the rails but when i plug either magsafe3 or usbc inget 5v stable with 0.00 amps drown, no cycle, just these steady values, board is not in dfu mode, checked with magsafe and with usbc. Only value that i find on the board is ppdcin_aon which is 5v… i dont get 3,3 aon, 3v8 aon .. all missing, where should i start looking please !...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 09:40 AM
Peavey PV23XO Crossover Repair and Enhancement

by clearchris

This crossover was bought new about 12 years ago, and has probably been powered on for at least 3/4 of that time. It also has a recently developed horrible sound on the second channel, sometimes it's a wub-wub-wub, sometimes it's just a hum that comes and goes. It's not noticable if something is playing (it may be gone), but it's quite noticable if there is silence.

Because of age and problems it's due for a recap. I'm also strongly considering putting in sockets to potentially replace the 12 ST TL072 opamps. For such a small device, it's still going to be over 30 screws to take...
- Channel: Troubleshooting Audio Equipment
Today, 09:00 PM
Sony Data Projector vplfh31 3LCD Blue missing

by budwich

Got this projector which has a problem with a lack of blue. Menu text is very yellow... expecting white. If I input a signal from a test disc via hdmi, a red screen image shows a uniform red as expect. Green similar while the blue does show but with non-uniformity. Looked at the in-polarizers. They are all good and clean. Running the projector to expose the light area in the prism block, shows each color well represented, all looking about the same intensity from the naked eye. Looking at the prism block itself and sending a light source back into the "out port", the individual...
- Channel: Troubleshooting TVs and Video Sources
Yesterday, 06:49 PM
ASUS VIVIBOOK X541UV BIOS password removal is possible!

by Yacine007

Could someone assist in removing the BIOS password from this binf file? I've tried and failed to follow the guides regarding AMITSE decryption !

Laptop is an ASUS X541UV - bin file and pictures attached.

Thanks for reading!...

3 Photos
- Channel: BIOS Requests ONLY!
Today, 01:25 PM
Sony LED 65X9005A shuts down after few seconds - looking for help

by tec3000

Hi community! Germany calling I am wondering if you guys can help me out. I have an issue with my Sony LED TV. I've been told this is a good place to ask. Thanks for anyone who will reply and offer advice. Appreciated!

I have a KD-65X9005A Sony 4k LED TV. For a few weeks I've got this problem where I turn on the TV and within a few seconds the TV starts getting darker until it shuts itself off and I get the 4 blinking error code. HOWEVER there is one exception: Whenever I switch to the i-Manual, a full screen on-screen instruction manual, the TV never turns off. I tested for hours!...
- Channel: Troubleshooting TVs and Video Sources
03-20-2024, 07:29 AM
Dell Precision 5510, AAM00 LA-C361P Rev:2.0 turns on, no image.

by andrhouseolly

Hi.
I kindly ask you to help me solve the problem.
Dell Precision 5510, motherboard AAM00 LA-C361P Rev:2.0
The board turns on, there is no image.
Read more. When the power supply is connected, the front panel indicators light up briefly.
When you press the power button, the button indicator lights up. The board works
there is no image, there is no matrix initialization, there is no image on HDMI.
When turned on, the fans do not spin, but when they warm up they start spinning.
When you turn off the button, the fans spin up to full speed for a short...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 03:14 PM
Pad repair

by ImpossibleRepairs

Howdy good peoples;

looking for some advice on Pad repairs, want ti expand my skills

Working on a HP board that went for a swim; There was a short in what appeared to be the Data IC (there was corrupted data that we recovered) ;

First picture is the donor Board, clean removal;

Second picture is board im working on; As soon as I started prepping the pads to re work the IC, the damage started;

As a side note, Im using good equipment M series Thermal tronics iron with a 1.6m tip; Good quality locally produced flux, good quality...

3 Photos
- Channel: Equipment Usage, Soldering, Techniques, and Reviews
Today, 05:19 PM
Sony MBX-273 No Power(3.3V, 5V Missing)

by Hasith

I have this Sony MBX-273 on my hand. 19V present but no Voltage on 3.3, 5V Coils.

It has a [B]SN608098 [/B]Chip. When I check its pins It shows;
19V on pin 6(VIN)
5.3V on pin 4(EN_LDO)
3.4V on pin 5(VREF3)
1.3V on pin 1(VREF2)

But only 0.46V on pin 7(LDO)

Is this means Chip is gone?

I have this Sony MBX-273 on my hand. 19V present but no Voltage on 3.3, 5V Coils.

It has a [B]SN608098 [/B]Chip. When I check its pins It shows;
19V on pin 6(VIN)
5.3V on pin 4(EN_LDO)
3.4V on pin 5(VREF3)
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 03:20 AM

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