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| Badcaps Capacitor & Electronics Repair Forum | ||||||
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Frequently Asked Questions (No Posting)
All new members, PLEASE READ HERE FIRST! Posting only allowed by established members.
Topics: 45
Posts: 733
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45 | 733 |
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Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
Topics: 235
Posts: 42,500
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235 | 42,500 |
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| Document & Software Archive | ||||||
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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
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2 | 5 |
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| General Topics | ||||||
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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: 3,195
Posts: 32,737
Last Post:
How can I test non-polarized capacitor?
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3,195 | 32,737 |
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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: 4,507
Posts: 74,893
Last Post:
Copy-protected DVDs
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4,507 | 74,893 |
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| Troubleshooting Hardware & Devices and Electronics Theory | ||||||
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General Electronics Technical Discussion
If you have a general question concerning basic electronics theory or component function & usage, here's where it goes.
Topics: 3,994
Posts: 44,528
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3,994 | 44,528 |
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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: 6,896
Posts: 37,720
Last Post:
MSI B660 MORTAR NO DISPLAY
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6,896 | 37,720 |
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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: 502
Posts: 5,457
Last Post:
4G LTE router sim socket replacement
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502 | 5,457 |
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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: 32,277
Posts: 308,753
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32,277 | 308,753 |
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Sub-Forums:
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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: 75,746
Last Post:
Dell U3011 no display after a few minutes
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5,332 | 75,746 |
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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: 27,506
Posts: 375,310
Last Post:
Rca RWOSU7047 No Picture
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27,506 | 375,310 |
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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: 65,352
Last Post:
Welder not turning on - Learning
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4,196 | 65,352 |
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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: 306
Posts: 1,687
Last Post:
Bios Canon mg 6853
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306 | 1,687 |
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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: 27,607
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2,343 | 27,607 |
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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: 227
Posts: 3,940
Last Post:
Xiaomi Roidmi EVE Pro battery died!
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227 | 3,940 |
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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: 1,021
Posts: 10,970
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1,021 | 10,970 |
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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: 19,499
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1,382 | 19,499 |
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The HILTI CPC battery flashes green but no tool starts or works. when testing the battery has 19.2v what could be the problem with them because I have three similar ones but there is nothing written on them all the patches are removed in the first B22 /4.0 with 19.2v the second one B22 /5.2 with 21.8v the third B22 /4.0 with18.3v are all three destroyed ? a bit difficult to believe have also tried other Hilti tools the same thing if someone who can help very grateful...Today, 08:05 AM
-
Hi,
I have a bricked ThinkPad P52, has no display nothing. Just happened to be in this situation after a failed bios update. Could anyone please get the rom file? I just ordered the ch341a programmer for the first time so if anyone can help me that would be much appreciated.
Type 20m9-000kus
S/n pf-1ldn07 19/02
ThanksToday, 05:34 PM -
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?05-18-2024, 01:22 PM
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Hello all, I've been looking into this portable air conditioner's remote control and can't find what could be causing the problem - or possibly this remote is just terribly designed.
The remote only works at exactly 3V - if I drop it any lower, using my bench power supply, to say, 2.9V then the remote will not flash the display and turn off. I don't have any AAA batteries that are exactly 1.5V each so I'm not sure if this remote is designed this way - to only use the freshest possible batteries, or if there's a failed component in the mix.
I can't find any schematics...Today, 03:53 PM -
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...05-29-2024, 08:23 PM -
My microscope is not getting power and upon opening I have found an Ic that's burnt it's lettering is CW0Q and it has 6 pins looks to be sot23-6 package.
Thanks
Ps will upload Pic shortlyYesterday, 02:54 AM -
Ok, so I know I know, it's a Westinghouse....lol It's got the backlights but no video. Likely the panel, but I'd like to take some measurements on the buffer board with help from you experts to confirm. See the attached pictures. In pic #1, there's a nice pin reference to use to take some measurements. The large IC in pic #7 gets up to 60degC when the TV is on.
So, backlights, no video, go! 🙂...Today, 03:21 PM -
Guys I have set top box which has no power on in specific case. When I insert antenna plug which has 12V on it because of dB gain device on top of antenna, device if its turned off, it will not turn on.
After I need to open the case and short + and - on ABS10 chip and after that device will turn on, without antenna plugged in, after its turned on I can plug in antenna and it will work fine, but I notice there is some extra heat inside the unit.
Is this chip okay? Rectifier bridge ABS10 JQC I don't think there should be connection like additional diode between plus and minus...Yesterday, 03:09 AM -
CPU: i5-8365U
1.Scanned motherboard in 1200DPI
2.Schematic in PDF
3.Boardview in PDF
4.Boardview in CAD (open with BoardViewer 2.1.0.8)
[URL=filedata/fetch?id=3283458&d=1717448850][ATTACH=JSON]{"alt":"Click image for larger version Name:\t2024-06-03-21h-44m.jpg Views:\t0 Size:\t1.94 MB ID:\t3283458","data-align":"none","data-attachmentid":"3283458","data-size":"small"}[/ATTACH][/URL] [URL=filedata/fetch?id=3283459&d=1717448858][ATTACH=JSON]{"alt":"Click...Today, 03:11 PM -
Hi,
I´ve a replacement Lenovo Battery with liquid damage
The component (I believe) a Mosfet is gone and I can´t find anything online. The marking is: 3108H1 D54FHJ
Please find the pictures attached.
Thanks [ATTACH=JSON]{"alt":"Click image for larger version Name:\tlenovo_battery.png Views:\t0 Size:\t1.27 MB ID:\t3283440","data-align":"none","data-attachmentid":"3283440","data-size":"custom","height":"525","width":"802"}[/ATTACH]...Today, 02:49 PM
-
Hello all, I've been looking into this portable air conditioner's remote control and can't find what could be causing the problem - or possibly this remote is just terribly designed.
The remote only works at exactly 3V - if I drop it any lower, using my bench power supply, to say, 2.9V then the remote will not flash the display and turn off. I don't have any AAA batteries that are exactly 1.5V each so I'm not sure if this remote is designed this way - to only use the freshest possible batteries, or if there's a failed component in the mix.
I can't find any schematics...Today, 03:53 PM -
Hi,
I have a bricked ThinkPad P52, has no display nothing. Just happened to be in this situation after a failed bios update. Could anyone please get the rom file? I just ordered the ch341a programmer for the first time so if anyone can help me that would be much appreciated.
Type 20m9-000kus
S/n pf-1ldn07 19/02
ThanksToday, 05:34 PM -
I get backlights that stay on not there is no image. The tv does not automatically power on when plugged in either which I generally see happen when there is a fault. It responds as it should to the power button.
I checked the test points on the TCON and I have proper voltages except for at 1P15V. I don't know if that is supposed to be 15V or 5V, but either way I only get 1.134V on that point. I have 12V, 8V, VCC, and a small amount on the CKV point.
I tried heating up the SoC on the main board but that made no difference. Disconnecting either ribbon from the TCON also...06-01-2024, 08:55 PM -
Hey everyone, I have an LG 65uq7050zud with a black picture but backlight is on. I tested the measurements from the PSU and they check out. I can’t find any service manual so I’m suspecting the main board. Any advice before I replace the board? Found them for around $60...Yesterday, 12:10 PM
-
Ok, so I know I know, it's a Westinghouse....lol It's got the backlights but no video. Likely the panel, but I'd like to take some measurements on the buffer board with help from you experts to confirm. See the attached pictures. In pic #1, there's a nice pin reference to use to take some measurements. The large IC in pic #7 gets up to 60degC when the TV is on.
So, backlights, no video, go! 🙂...Today, 03:21 PM -
Guys I have set top box which has no power on in specific case. When I insert antenna plug which has 12V on it because of dB gain device on top of antenna, device if its turned off, it will not turn on.
After I need to open the case and short + and - on ABS10 chip and after that device will turn on, without antenna plugged in, after its turned on I can plug in antenna and it will work fine, but I notice there is some extra heat inside the unit.
Is this chip okay? Rectifier bridge ABS10 JQC I don't think there should be connection like additional diode between plus and minus...Yesterday, 03:09 AM -
CPU: i5-8365U
1.Scanned motherboard in 1200DPI
2.Schematic in PDF
3.Boardview in PDF
4.Boardview in CAD (open with BoardViewer 2.1.0.8)
[URL=filedata/fetch?id=3283458&d=1717448850][ATTACH=JSON]{"alt":"Click image for larger version Name:\t2024-06-03-21h-44m.jpg Views:\t0 Size:\t1.94 MB ID:\t3283458","data-align":"none","data-attachmentid":"3283458","data-size":"small"}[/ATTACH][/URL] [URL=filedata/fetch?id=3283459&d=1717448858][ATTACH=JSON]{"alt":"Click...Today, 03:11 PM -
Hello everybody:
I'm fixing a Lenovo Legion 5P 15IMH (can't see more on cover, but I will put a pic of the MoBo's reference), and I have a problem. I have solved all the problems with several components which went bad (MosFets, +3.3/+5Vdc regulator, shorted EC), and everything is not shorted now, but the PCH is. So I need your help to order this chip. I don't know what is the designation in order to buy one (the one in the MoBo was removed because it has a shorted zone). Everything is clean waiting for a new PCH, but I have no clues in how to order one. Please I beg your help....Today, 09:44 AM -
Hello dear badcappers!
The title pretty much says it all - do you, please, know if there's any way to troubleshoot which of the integrated RAM chips (LPDDR5X in this case) is faulty?
[B]Backstory: [/B]
After replacing the 4 onboard (soldered) memory chips on a RoG Ally (4x4 GB to 4x8 GB) it got stuck on the RoG logo. I assume one of the chips is either not soldered properly or faulty. However after reflowing and replacing bunch of them I am still stuck at the same place.
If there is a way to narrow down which memory module is faulty it would make my...Today, 12:05 PM