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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: 42,444

Last Post: New Members - please post your introductions here

235

42,444

New Members - please post your introductions here

by CobraInformatique

Today, 06:25 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: 2 Posts: 5

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: 3,192 Posts: 32,729

Last Post: I need a replacement series “KY” and KZE for 10uf @ 50 volt what series would replace them discontinued status

3,192

32,729

I need a replacement series “KY” and KZE for 10uf @ 50 volt what series would replace them discontinued status

by stj

Today, 10:45 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: 4,506 Posts: 74,883

Last Post: LC-70LE650U green band display

4,506

74,883

LC-70LE650U green band display

by LC-70LE650U Joe

Today, 06:38 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: 3,990 Posts: 44,503

Last Post: Confused - I don’t want to order wrong thing

3,990

44,503

Confused - I don’t want to order wrong thing

by tester272001

Yesterday, 03:53 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: 6,881 Posts: 37,667

Last Post: need optiplex 7010 bios dump

6,881

37,667

need optiplex 7010 bios dump

by mugen1903

Today, 08:14 AM

Sub-Forums:

BIOS & Schematic Requests! (2,716/16,513)

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: 5,455

Last Post: Fortinet 50E Slowing down internet throughput

501

5,455

Fortinet 50E Slowing down internet throughput

by CapLeaker

05-12-2024, 09:21 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: 32,236 Posts: 308,363

Last Post:

32,236

308,363

by imitari digital

Today, 05:03 AM

Sub-Forums:

BIOS Requests ONLY! (12,851/155,818)

Schematic Requests ONLY! (4,808/28,837)

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: 5,332 Posts: 75,742

Last Post: Dell 2408WFPb / 2408WFP - No Power

5,332

75,742

Dell 2408WFPb / 2408WFP - No Power

by Aezakmi

Today, 03:44 AM

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: 27,496 Posts: 375,236

Last Post: Samsung ue49mu6120

27,496

375,236

Samsung ue49mu6120

by lotas

Today, 11:44 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: 4,196 Posts: 65,332

Last Post: Welder not turning on - Learning

4,196

65,332

Welder not turning on - Learning

by sam_sam_sam

Today, 06:41 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: 305 Posts: 1,686

Last Post: i need dump for printer canon G3430

305

1,686

i need dump for printer canon G3430

by aboumohamed

Today, 08:55 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: 2,343 Posts: 27,604

Last Post: Squire bass guitar amp PB 15 no sound

2,343

27,604

Squire bass guitar amp PB 15 no sound

by redwire

Yesterday, 01:38 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: 226 Posts: 3,952

Last Post: Xiaomi Roidmi EVE Pro battery died!

226

3,952

Xiaomi Roidmi EVE Pro battery died!

by Amironox

05-28-2024, 09:47 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: 1,017 Posts: 10,948

Last Post: PS5 Slim Beep No Light UART DDR4 Error

1,017

10,948

PS5 Slim Beep No Light UART DDR4 Error

by ongobongo

Today, 09:17 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: 1,382 Posts: 19,494

Last Post: anyone recommend an earth leakage clamp meter ?

1,382

19,494

anyone recommend an earth leakage clamp meter ?

by petehall347

Today, 01:58 PM

Mark Channels Read

Lenovo Legion 5 15IAH7 - NM-E241 Rev 1.0 - BIOS fix needed

by Mirenia

Hello everyone,

My Legion 5 15IAH7 won't post. won't boot. No fans, no keyboard backlight.
Online power led and charging led lights up.

My guess is that there is some issue with the BIOS.

It's the NM-E241 Rev 1.0 motherboard.

As I found out there are two BIOS dumps needed for this board.
One 16MB and one 8MB.

I've got both uploaded. Can you maybe check and fix this BIOS files?

Thanks a lot in advantage ...
- Channel: BIOS Requests ONLY!
Today, 07:01 PM
Welder not turning on - Learning

by Olles4

Hello people. I trying to repair my welding machine oerlikon citomig 180mp hpf and there is a little board with blown stuff.The problem is i cant identify the value of the blown resistor and diode. Any suggestion?

4 Photos
- Channel: Troubleshooting Power Supplies and Power Supply Design
05-18-2024, 01:22 PM
LC-70LE650U green band display

by LC-70LE650U Joe

Hi All! So I got this LC-70LE650U monitor from work.... Worked great there! When I got it home and hooked it up I got this split/greenish display problem. Sound works great but nit the display. I tried two different computers and two different HDMI cables and no go. I opened it up and reseated each cable etc and I still have the same issue. I attached images of the boards inside also. Any ideas? Joe...
- Channel: General Computer & Tech Discussion
Today, 06:38 PM
Lenovo Y40-80 bios

by goldhawks

Hi all, I have a Lenovo Y40-80 that I am trying to remove the Admin password for. There is a password screen that comes up immediately that I can input a user password for (Pic 3) and this will allow me access to Windows or the BIOS, but a majority of the options are grayed out in the BIOS (Pic 4).

I have attached a picture of my overall chassis and a close up of the chip that I have read (using CH341A and AsProgrammer). I output two files from the chip and compared them (fc /b) and they were the same. I patched the first file (the file felt like it processed too quickly) and then...

4 Photos
- Channel: BIOS Requests ONLY!
Yesterday, 01:45 PM
Asus Rog GL502VM Rev 2.0 - Power button LED on as soon as plugged in but no video or fans

by zwect

I have this Asus ROG laptop (the 1060 + 6700HQ variant) which lights up the power button's LED when i plug the charger in but does nothing else. Opening up there are no signs of any burnt or corroded components, i've checked the resistance of both CPU and GPU's cores on the caps underside them, the CPU's VCCCORE's caps read 1.2ohm and the GPU's NVVDD read about 0.5 to 0.6ohm. I then tried to check any voltages while the laptop is plugged in (without any of the removable parts) and the GPU's core voltage instantly goes to 0.8v when plugged then getting slowly warm, the PCH does so too (not so warm...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 06:23 PM
Omega MML200 Coutant Lambda PSU repair

by Crystaleyes

Hi all.

Recently I picked up a vintage HP 37717B communications analyzer which uses one of these MML200 Coutant power supplies. Needless to say the PSU is not working, and surprisingly there is apparently nothing available on the web regarding repairing one of these. No stories, no schematics, zilch!
There[I] are [/I]however many companies offering repair 'services', however I don't have the luxury of sending it off, so am intending to do the repair myself.

I admit right now that I am no expert on smps repair, although I do have a grasp on the principle of the general...

5 Photos
- Channel: Troubleshooting Power Supplies and Power Supply Design
05-29-2024, 08:23 PM
Asus RogSTRIX bios g513rm

by wino05trance

Hello, I would like you to help me with this bios that is blocked, it works completely, I have not found a file compatible with my logic card, I programmed a bios but it did not have sound nor did the graphics card work.
ASUS
RogStrix
G513RM
Board: 6050a3348804-mb-a01
It is locked, can you help me unlock it please and give me some tutorial or post, I would like to learn how to unlock it myself.
Sorry for my English....
- Channel: BIOS Requests ONLY!
Today, 04:15 PM
help identyfy two ics - mb 15.6 SABA MB WHL_4 18748-1 448.0gb13.0011 hp envy

by thunderleg12

hello

I am looking for two ics on this mb:

1st marked 947 and secound sot23-5 marked 5af8b

thanks and regards...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 04:32 AM
Lenovo Legion 5 15IAH7 - location of BIOS chip

by Mirenia

Hi everyone,

I've got a Lenovo Legion 5 15IAH7 with no post/no boot issue.

The mainboard is a NM-E241 Rev 1.0

Now I am searching for the BIOS chip so I can reflash it.
But I have some difficulties to identify the correct chip. The schemantics somehow are not really helpful for me (I am a beginner with Laptop schemantics)

I found 3 Winson chips and one GigaDevice chip as you can see on the screenshots.
My guess its the W25Q128JVSIN (UB3) because it is the biggest from all.

I attached the pages of the schemantics from the...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 01:31 PM
MacBook Pro 2011 turns on with keyboard light , screen dead

by Rav_tangle

Hi all , thanks for having me & I think this has been asked before but my case seems a bit odd.
I have a MacBook Pro , board 820-2915a and it turns on , chimes etc etc , keyboard lights up, fans spins , can turn caps lock on/off but screen is dead.
Iv tried the resets , shine torch through back logo , nothing , it seems the screen has no power. If I plug charger , it charges but if I disconnect battery it displays green light but won't turn on. Iv tried screen on with another board & it works & seems I'm not getting any voltage at pin 2 , next to ground pin .
is this...
- Channel: General Computer & Tech Discussion
Today, 04:09 PM

Asus RogSTRIX bios g513rm

by wino05trance

Hello, I would like you to help me with this bios that is blocked, it works completely, I have not found a file compatible with my logic card, I programmed a bios but it did not have sound nor did the graphics card work.
ASUS
RogStrix
G513RM
Board: 6050a3348804-mb-a01
It is locked, can you help me unlock it please and give me some tutorial or post, I would like to learn how to unlock it myself.
Sorry for my English....
- Channel: BIOS Requests ONLY!
Today, 04:15 PM
A1278 820-3115 stuck in sleep mode

by Sergio Kub

I'm fixing a board that turns on, but stops right at the beginning, it stays in hibernation with the light on.
I made these voltage measurements PPBUS_G3H=12.61V - SMC_PM_G2_EN=3.3V - PP5V_S3_AUDIO=5V - all_sys pwrgd=3.3V.
Anyone with experience in this problem who can help me?
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 03:25 PM
LC-70LE650U green band display

by LC-70LE650U Joe

Hi All! So I got this LC-70LE650U monitor from work.... Worked great there! When I got it home and hooked it up I got this split/greenish display problem. Sound works great but nit the display. I tried two different computers and two different HDMI cables and no go. I opened it up and reseated each cable etc and I still have the same issue. I attached images of the boards inside also. Any ideas? Joe...
- Channel: General Computer & Tech Discussion
Today, 06:38 PM
Asus Rog GL502VM Rev 2.0 - Power button LED on as soon as plugged in but no video or fans

by zwect

I have this Asus ROG laptop (the 1060 + 6700HQ variant) which lights up the power button's LED when i plug the charger in but does nothing else. Opening up there are no signs of any burnt or corroded components, i've checked the resistance of both CPU and GPU's cores on the caps underside them, the CPU's VCCCORE's caps read 1.2ohm and the GPU's NVVDD read about 0.5 to 0.6ohm. I then tried to check any voltages while the laptop is plugged in (without any of the removable parts) and the GPU's core voltage instantly goes to 0.8v when plugged then getting slowly warm, the PCH does so too (not so warm...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 06:23 PM
HP x360 1030 G2

by sauce

Hi,

I have this laptop HP x360 1030 G2.

Battery is charging well, the laptop powers on the CPU gets warm but nothing on the internal screen or hdmi.

The fan is spinning at full speed.

Any idea ?

I just asked for a schematic i cannot find it.
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 05:25 AM
Hp pavilion 14 - No display

by Nagyesz

Hi all,
Model: HP Pavilion 14-ce3010nh 8BV97EA
Board number: DAG7ALMB8C0 - G7AL REV C
Issue: I have an HP Pavilion 14-ce3010nh 8BV97EA laptop. When plugged into the charger, it turns on, but there is no display, the fans do not run, and the processor gets slightly warm. Unfortunately, I haven't been able to figure out what the problem is. I've reflashed the BIOS twice without any success. No post. Already tried out with another ram stick with no luck

I measured the voltage with the HP turned on in red, and I measured their resistance with the HP turned off in green....
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Yesterday, 04:10 AM
Lenovo Legion 5 15IAH7 - location of BIOS chip

by Mirenia

Hi everyone,

I've got a Lenovo Legion 5 15IAH7 with no post/no boot issue.

The mainboard is a NM-E241 Rev 1.0

Now I am searching for the BIOS chip so I can reflash it.
But I have some difficulties to identify the correct chip. The schemantics somehow are not really helpful for me (I am a beginner with Laptop schemantics)

I found 3 Winson chips and one GigaDevice chip as you can see on the screenshots.
My guess its the W25Q128JVSIN (UB3) because it is the biggest from all.

I attached the pages of the schemantics from the...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 01:31 PM
MacBook Pro 2011 turns on with keyboard light , screen dead

by Rav_tangle

Hi all , thanks for having me & I think this has been asked before but my case seems a bit odd.
I have a MacBook Pro , board 820-2915a and it turns on , chimes etc etc , keyboard lights up, fans spins , can turn caps lock on/off but screen is dead.
Iv tried the resets , shine torch through back logo , nothing , it seems the screen has no power. If I plug charger , it charges but if I disconnect battery it displays green light but won't turn on. Iv tried screen on with another board & it works & seems I'm not getting any voltage at pin 2 , next to ground pin .
is this...
- Channel: General Computer & Tech Discussion
Today, 04:09 PM
HP Elitebook 650 G10

by Dallen Bryce

Hello, I'm trying to remove the password from an HP Elitebook 650 G10. It's motherboard has two chips, a 32mb spi (W25Q256JVEN) and 32mb ec (GD25B256EYIG). I have created a dump of each, but don't know which one(s) to patch. Could someone point me in the right direction or just patch it for me?...
- Channel: BIOS Requests ONLY!
05-29-2024, 06:29 PM
help identyfy two ics - mb 15.6 SABA MB WHL_4 18748-1 448.0gb13.0011 hp envy

by thunderleg12

hello

I am looking for two ics on this mb:

1st marked 947 and secound sot23-5 marked 5af8b

thanks and regards...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
Today, 04:32 AM

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