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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: 732
45 732
Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
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234 41,444
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
1 3
xaruqui
by xaruqui
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: 3,177 Posts: 32,632
3,177 32,632
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: 4,491 Posts: 74,771
4,491 74,771
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: 3,959 Posts: 44,232
3,959 44,232
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: 6,764 Posts: 36,995
6,764 36,995
Sub-Forums:
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: 499 Posts: 5,433
499 5,433
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: 31,628 Posts: 300,718
31,628 300,718
Sub-Forums:
BIOS Requests ONLY! (12,598/151,021)
Schematic Requests ONLY! (4,700/28,221)
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: 5,313 Posts: 75,651
5,313 75,651
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: 27,406 Posts: 374,087
27,406 374,087
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: 4,168 Posts: 65,133
4,168 65,133
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: 300 Posts: 1,661
300 1,661
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: 2,308 Posts: 27,382
Last Post: Onkyo TX-DS575
2,308 27,382
frankusb
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: 219 Posts: 3,884
219 3,884
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: 996 Posts: 10,836
996 10,836
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: 1,373 Posts: 19,313
1,373 19,313

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There are currently 529583 users online. 3797 members and 525786 guests.

Most users ever online was 1,196,122 at 03:31 PM on 12-14-2023.

Badcaps Statistics

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Topics: 101,790   Posts: 1,264,002   Members: 489,670   Active Members: 16,187
Welcome to our newest member, Abraham Peña.

Latest Topics

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  • totof
    LG 43UF640V backlight good but black screen and no sound
    by totof
    Good morning.
    I have a problem with my LG Smart 43UF640V TV. It starts, the backlight comes on but nothing is displayed on the screen and there is no sound.
    I thought it was a TCon problem and ran various tests. If I disconnect one or the other of the cables from the tcon to the panel then the screen is white on the side where the cable is disconnected and black on the other side. If the two cables are disconnected the screen is completely black.
    In the 4 configurations I measure exactly the same voltages on the tcon card (model V15 43UHD TM120 Ver0.4) :

    [FONT=Calibri]HVDD...
    04-13-2024, 11:37 PM
  • EazyBone
    Hisense 85h6570g glitch?
    by EazyBone
    Got this massive TV and tested they backlights and they were out. Took it all apart and replaced them. Put it back together and boom they work! I then run it for many hours and all still working. I then needed to factory reset to pass on to next person and...

    I factory reset and it shows Hisense logo fully lit up, then Google logo for a couple of seconds and forces shut off. Now that's all the TV does. Hisense, Google logo force shutoff. How is this possible.. anyone have some experience or advice for this. All I can think is somehow I got a software corruption which is ridiculous...
    Today, 07:31 AM
  • itsmaserati
    Dell Inspiron 15 5510 BIOS Password Removal
    by itsmaserati
    Hello all, seeing if someone can help me and remove the Dell security manager password.
    Thank you in advance!

    Dell Inspiron 15 5510
    ST: F8Z24B3...
    Today, 02:59 PM
  • Carl0s-
    iPad 5th gen (A1823) - No charge but recognized by finder
    by Carl0s-
    Hi,

    Sooo - our IT got a pile of old iPads that the sales guys have been mistreating. These are free for grabs if you want to try to get one working. Thought I'd give it a try - if I get at least some life to I can give to my kid to entertain during a car rides.

    But the iPad it self - its a 5th gen cellular model. When I initially plug it in it was completely dead. It was not recognized by my Mac nor it started to charge. Disassembled it opened up the battery connector and checked the battery voltage. My multimeter showed 0,7v. Had a spare micro-usb charging board lying...
    Today, 12:51 PM
  • wolf1976
    lg 49uj634
    by wolf1976
    hi to all in this tv i have problem with the colours you can see on the video from normal changed to purple
    is like solarized picture on your opinion and caused from gamma ic or is display?
    thanks on advance...
    Yesterday, 12:18 PM
  • shlomim412
    Macbook a2141 - logicboard 820-01700 no wifi\bt
    by shlomim412
    Hello
    working on a2141 macbook, board number 820-01700 which has no wifi\bt and also no connection with LAN cable.

    initial visual inspection the board looks good no visible corrosion or damage.

    i found that PP3V3_G3S_X is shorted to ground (around 1.5ohm short)
    and also PP3V3_GS3_WLAN i shorted to ground (same ohm reading, around 1.5ohm).

    the board is working but no WIFI\BT as i mentioned.

    with the usb c cable connected for measurement i noticed U8215 i getting EXTREMELY HOT
    so i pulled it out figuring it might be causing the...
    Today, 01:18 PM
  • BMCappelletti
    Macbook Air A1466 EMC 3178 missing power and liquid damaged
    by BMCappelletti
    Hi everyone.
    Macbook Air A1466 EMC 3178 (board 820-00165 A) not turning on and no charging light. Completely dead. With no battery connected it would power up and I could hear the chime, but nothing on the screen and then a sudden turn off. Sometimes during the chime. Opened it up and found some liquid damage. The flat that connects both boards has damage in one side (with a missing pin already). The connectors on the boards are fine, though.
    Also, there was liquid damage on the included picture area, which are R8111 and C8111. A quick and soft brush on it made the resistor be gone....
    Today, 01:24 PM
  • trepachka
    Lid sensor location for HP Spectre 15s-fr2000
    by trepachka
    Hello, I have this HP Spectre 14-ea0023dx (wrong model number in the title) laptop with an issue. When you close the lid, the screen goes off. Then, when you open the lid the screen remains dark while the computer is still running.

    I suspect the issue is with the lid sensor which I am assuming is a small magnet located in the lower part behind the screen bezel.

    Could someone, please confirm this? Thanks.
    Yesterday, 04:32 PM
  • rumpumpel1
    MEC1503 from aliexpress
    by rumpumpel1
    Hi,

    a few weeks ago I saw offers for a MEC1503 on aliexpress. Out of curiosity, I bought one and was a bit surprised when the chip arrived: as you can see in the picture, it was significantly smaller than the original in my ThinkPad. Does this chip really exist in 2 sizes or is it just a fake?

    [ATTACH=JSON]{"data-align":"none","data-size":"full","title":"grafik.png","data-attachmentid":3253284}[/ATTACH]​Hi,

    a few weeks ago I saw offers for a MEC1503 on aliexpress. Out of curiosity, I bought...
    Today, 11:32 AM
  • frankusb
    Onkyo TX-DS575
    by frankusb
    The receiver is going into protect mode when switching inputs or enabling/disabling A or B speakers on the front panel. I removed the protect signal from the main microprocessor and the system played normally on FR and FL speakers from an analog input. I measured the protect signal and it's attached.

    [ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3242189}[/ATTACH]

    I checked the idle current adjustment on each of the 5 channels and adjusted them slightly (less than 2mV). I checked the DC offset...
    03-25-2024, 02:11 PM

Trending

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  • Carl0s-
    iPad 5th gen (A1823) - No charge but recognized by finder
    by Carl0s-
    Hi,

    Sooo - our IT got a pile of old iPads that the sales guys have been mistreating. These are free for grabs if you want to try to get one working. Thought I'd give it a try - if I get at least some life to I can give to my kid to entertain during a car rides.

    But the iPad it self - its a 5th gen cellular model. When I initially plug it in it was completely dead. It was not recognized by my Mac nor it started to charge. Disassembled it opened up the battery connector and checked the battery voltage. My multimeter showed 0,7v. Had a spare micro-usb charging board lying...
    Today, 12:51 PM
  • shlomim412
    Macbook a2141 - logicboard 820-01700 no wifi\bt
    by shlomim412
    Hello
    working on a2141 macbook, board number 820-01700 which has no wifi\bt and also no connection with LAN cable.

    initial visual inspection the board looks good no visible corrosion or damage.

    i found that PP3V3_G3S_X is shorted to ground (around 1.5ohm short)
    and also PP3V3_GS3_WLAN i shorted to ground (same ohm reading, around 1.5ohm).

    the board is working but no WIFI\BT as i mentioned.

    with the usb c cable connected for measurement i noticed U8215 i getting EXTREMELY HOT
    so i pulled it out figuring it might be causing the...
    Today, 01:18 PM
  • EazyBone
    Hisense 85h6570g glitch?
    by EazyBone
    Got this massive TV and tested they backlights and they were out. Took it all apart and replaced them. Put it back together and boom they work! I then run it for many hours and all still working. I then needed to factory reset to pass on to next person and...

    I factory reset and it shows Hisense logo fully lit up, then Google logo for a couple of seconds and forces shut off. Now that's all the TV does. Hisense, Google logo force shutoff. How is this possible.. anyone have some experience or advice for this. All I can think is somehow I got a software corruption which is ridiculous...
    Today, 07:31 AM
  • itsmaserati
    Dell Inspiron 15 5510 BIOS Password Removal
    by itsmaserati
    Hello all, seeing if someone can help me and remove the Dell security manager password.
    Thank you in advance!

    Dell Inspiron 15 5510
    ST: F8Z24B3...
    Today, 02:59 PM
  • rumpumpel1
    MEC1503 from aliexpress
    by rumpumpel1
    Hi,

    a few weeks ago I saw offers for a MEC1503 on aliexpress. Out of curiosity, I bought one and was a bit surprised when the chip arrived: as you can see in the picture, it was significantly smaller than the original in my ThinkPad. Does this chip really exist in 2 sizes or is it just a fake?

    [ATTACH=JSON]{"data-align":"none","data-size":"full","title":"grafik.png","data-attachmentid":3253284}[/ATTACH]​Hi,

    a few weeks ago I saw offers for a MEC1503 on aliexpress. Out of curiosity, I bought...
    Today, 11:32 AM
  • BMCappelletti
    Macbook Air A1466 EMC 3178 missing power and liquid damaged
    by BMCappelletti
    Hi everyone.
    Macbook Air A1466 EMC 3178 (board 820-00165 A) not turning on and no charging light. Completely dead. With no battery connected it would power up and I could hear the chime, but nothing on the screen and then a sudden turn off. Sometimes during the chime. Opened it up and found some liquid damage. The flat that connects both boards has damage in one side (with a missing pin already). The connectors on the boards are fine, though.
    Also, there was liquid damage on the included picture area, which are R8111 and C8111. A quick and soft brush on it made the resistor be gone....
    Today, 01:24 PM
  • Gecko-EC
    HP Probook 430 G2
    by Gecko-EC
    Hi Guys, I hope someone can assist me me. I have a HP Probook G2. It came in for not charging. When charger plugged in power light on the charge port was flickering as well as the caps lock light. Not a pattern, but inconsistent. I found a faulty mosfet on the power input which I replaced. Problem I have is that it does not start up without a battery unless I use a 18.5v charger. It does however start with the 19.5v with the battery installed, but the battery charge voltage is 2.58v. The required charger for this unit is a 19.5v of which I have tried several. The battery is bad and have ordered...
    Yesterday, 07:37 AM
  • Astray
    MSI GS75 No Power
    by Astray
    Hello, working on a laptop (MSI GS75 9SG-242US, Core i7-9750H, 2080 Max Q) and after replacing the screen and forgetting to disconnect the battery prior, I have no visible indications of power anywhere. It was working perfectly fine prior to the screen removal and replacement. Checked the motherboard PCB visually near the LCD connectors and didn't really see any indications of damaged surface mounted components but haven't looked under a microscope yet.

    Battery charging light isn't turning on when plugged in and pressing the button does nothing regardless of being on battery power...
    Yesterday, 09:35 AM
  • arecki09
    Lenovo L14 gen 2 no boot, bios needed
    by arecki09
    Hi!
    Model: Lenovo L14 gen 2
    CPU: SRK04 i5-1135G7
    Board: HL4A0/HL5A0 Rev. 1.0

    Laptop no boot, no react on power button. Power supply switch on 20V but consume only 0,11A. Electric i cannot found problem.
    Probably problem with bios
    Original bios in att.
    Please help!...
    Today, 12:59 PM
  • PACKETSTORM2
    EC Dump Asus U31JG or U31F
    by PACKETSTORM2
    Hi

    Need ec dump for Asus U31JG rev 2.0 or U31F rev 2.0, Thanks
    Today, 05:22 AM
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