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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
Last Post:
Electronic's acronyms - Meanings
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45 | 732 | ||||
Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
Topics: 234
Posts: 41,067
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234 | 41,067 | ||||
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
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1 | 3 | ||||
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: 3,167
Posts: 32,579
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3,167 | 32,579 | ||||
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: 4,492
Posts: 74,741
Last Post:
best cheap/free scores 1.1
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4,492 | 74,741 | ||||
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: 3,949
Posts: 44,148
Last Post:
Could you run a 3 phase motor using Arduino?
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3,949 | 44,148 | ||||
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: 6,701
Posts: 36,765
Last Post:
dell optiplex 3090 bios issue please help!!
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6,701 | 36,765 | ||||
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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: 499
Posts: 5,433
Last Post:
Security camera linking remotely to NVR
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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: 31,431
Posts: 298,344
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31,431 | 298,344 | ||||
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: 5,310
Posts: 75,635
Last Post:
ASUS VP228
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5,310 | 75,635 | ||||
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: 27,376
Posts: 373,531
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27,376 | 373,531 | ||||
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: 4,159
Posts: 65,058
Last Post:
Control board for treadmill Horizon Omega II
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4,159 | 65,058 | ||||
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: 299
Posts: 1,654
Last Post:
Need Canon G2020 Dump file
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299 | 1,654 | ||||
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: 2,306
Posts: 27,328
Last Post:
Marshall Stanmore II - chip flash
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2,306 | 27,328 | ||||
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: 217
Posts: 3,867
Last Post:
Trying to repair a MPI5.5kW solar inverter
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217 | 3,867 | ||||
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: 987
Posts: 10,798
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987 | 10,798 | ||||
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: 1,370
Posts: 19,303
Last Post:
wds-580 rework station issue
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1,370 | 19,303 |
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Badcaps Statistics
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Topics: 101,441
Posts: 1,260,008
Members: 486,968
Active Members: 16,925
Welcome to our newest member, hergo.
Latest Topics
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by sarry86
Hello, I have this laptop ThinkPad X250 that has this strange problem, when connected to the main power source, the fan spin once, keyboard lit up for like 2 secs then turns off, only power button remain with solid green light and the ThinkPad icon at the rear lit solid as well, I have tried everything, wiping, writing bioses that users here requested and were given as working for the exactly the specific model but nothing works, the strangest thing is that, even if I completely wipe the bios and blank check it to make sure it is wiped, the laptop still start as mentioned above, have anyone...03-20-2024, 01:23 AM -
by reassorThere is 2 sia ics and in 1 section where u see dots on the coils i have 2.2ohm there and there is no voltage on them at all.
Also i read in other topić how psu works on these tvs and when u pług it in there is constant 40w draw from wall. When I unplug display from tcon it drops 10w when I unplug tcon it drops another 10w (unplug done w/o power).
I'm mostly sure its main board cpu cause no sygnał to turn on 24 volt for panel and its constant draw.
For now I'm just curios about these w coils . Could not find any datasheet for ic thats the lines go...1 PhotoYesterday, 11:06 PM -
by sammus540I have a Vostro 3420 8H8K5R3-8FC8 that freeze at any attempt to enter bios password or the recovery master password received from dell. I do not have a clean BIOS image to flash.
And as luck would have it happened a couple of months ago right outside of the warranty period (Dec 2023) warranty expired in September. Any help or guidance is appreciated.-
Channel: BIOS Requests ONLY!
Yesterday, 06:33 PM -
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yesterday i bought this [ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"251","title":"corrossiom.png","width":"354","data-attachmentid":3238358}[/ATTACH]
I was not high on caffeine but the specs we nice-[LIST][*]Processor: AMD Ryzen 5 4600H 6 x 3 - 4 GHz, Renoir-H (Zen 2)[*]Graphics adapter: AMD Radeon RX Vega 6 (Ryzen 4000/5000)[*]Ram: 16gb DDR4[/LIST]so i bought it now i need schematics and help trouble shooting this all i saw is this burned cap idk what...03-19-2024, 05:00 AM -
by freakaftr8So this laptop seems to have some kind of failure. I bought it second hand and originally the previous owner said that they went to turn it on and it was presented with a quick flash of the power light the keyboard lit up and then the keyboard shut off and the power light went off as well but the battery indicator was white and after about 5 to 7 Seconds flashes orange really quick then shuts off and goes back to White. If the power button is pressed again the keyboard lights up really quick and then repeats. When I got it I could press the power button multiple times the keyboard light would...Yesterday, 10:58 PM
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by jingleslacksHey Friends!
I have both a live and demo unit. Demo unit firmware disables Bluetooth, power toggle, and other settings. Resets via button combos will not work on these. Reaching out to Marshall is not an option either.
I copied my live CMOS chip and flashed it to the demo unit, but that didn't fix it (MX25U3235F) This has worked for other devices in the past. I'm not a chip expert, but I'm assuming the firmware is stored in another chip.
If anyone has any experience or ideas, let's hear them!
Stanmore II
Stanmore 2...-
Channel: Troubleshooting Audio Equipment
03-23-2024, 05:09 PM -
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by bohabohaI'm thinking of buying some single smd led diode for tv repair to have under hand there is so many, 2835 k-6000k 9v.6v, 3v white etc but don't know which to have if you advise me which Should I buy and which is most usual and bäst to have under hand. thank youYesterday, 02:00 PM
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Hello all, so basically I have a bricked GL702V with no power except a single LED flash on the power button when it is pressed. Customer had tried to flash his bios with a USB and the GL702VM310 version of this laptop's bios. I've been scouring the web for a correct version of his bios but all the ones on the ASUS website are for GL702VM, GL702VT, GL702VS, or GL702VI with versions varying from 300-310. This specific laptop has nothing other than just the GL702V so I don't know which bios is compatible with it. I was planning on programming it with the CH341A programmer as soon as I found the correct...
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Channel: BIOS Requests ONLY!
Yesterday, 04:58 PM -
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by chth96I have an 21 inch CRT TV which is not able to power on.
I disassembled 21 inch CRT TV and measured voltage of main filter capacitor(Samhwa HC 400WV 220uF) in the circuit.
It shows 270V on my DMM.
So I discharged this main filter capactior completely and detached circuit board from cathode-ray tube.
Then I desoldered this main filter capacitor from circuit board.
But I noticed that this desoldered large capacitor(Samhwa HC 400WV 220uF) is slowly charged by itself until it reached 0.6V
I measured its ESR value with MESR-100 and it shows 0.1 ohm,judging...-
Channel: General Capacitor Questions & Issues
Yesterday, 08:56 AM -
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by tec3000Hi 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!...03-20-2024, 07:29 AM
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by reassorThere is 2 sia ics and in 1 section where u see dots on the coils i have 2.2ohm there and there is no voltage on them at all.
Also i read in other topić how psu works on these tvs and when u pług it in there is constant 40w draw from wall. When I unplug display from tcon it drops 10w when I unplug tcon it drops another 10w (unplug done w/o power).
I'm mostly sure its main board cpu cause no sygnał to turn on 24 volt for panel and its constant draw.
For now I'm just curios about these w coils . Could not find any datasheet for ic thats the lines go...1 PhotoYesterday, 11:06 PM -
by sammus540I have a Vostro 3420 8H8K5R3-8FC8 that freeze at any attempt to enter bios password or the recovery master password received from dell. I do not have a clean BIOS image to flash.
And as luck would have it happened a couple of months ago right outside of the warranty period (Dec 2023) warranty expired in September. Any help or guidance is appreciated.-
Channel: BIOS Requests ONLY!
Yesterday, 06:33 PM -
-
by FronczekHello people,
I've got this laptop not working for repairs, and as you can see something was done to it as you can see in the coils PL58XX (which I for some reason cannot find in the schematics...) The first FET (PQ201) was not an original part and a questionable one at that and the second one (PQ202) was shorted. Both are N-channel. Ordered replacements for them and replaced them after arrival. Now I have encountered another problem: there is no power at the second FET. By following the thread linked I got to the injection part. Applied 0.8V at 1.5A, but couldn't feel anything getting hot,...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!Yesterday, 04:18 AM -
by mecha1166I am working on a QN750Q8FNBFXZA. Dead except the standby light. It blinks what appears to be 1 3 1 2. 1 long blink, pause, 3 short, pause, 1 long, pause, 2 short, pause, repeat. A service manual would be very helpful, or if anyone knows these error codes. Thanks!Yesterday, 08:31 AM
-
Hello all, so basically I have a bricked GL702V with no power except a single LED flash on the power button when it is pressed. Customer had tried to flash his bios with a USB and the GL702VM310 version of this laptop's bios. I've been scouring the web for a correct version of his bios but all the ones on the ASUS website are for GL702VM, GL702VT, GL702VS, or GL702VI with versions varying from 300-310. This specific laptop has nothing other than just the GL702V so I don't know which bios is compatible with it. I was planning on programming it with the CH341A programmer as soon as I found the correct...
-
Channel: BIOS Requests ONLY!
Yesterday, 04:58 PM -
-
by bohabohaI'm thinking of buying some single smd led diode for tv repair to have under hand there is so many, 2835 k-6000k 9v.6v, 3v white etc but don't know which to have if you advise me which Should I buy and which is most usual and bäst to have under hand. thank youYesterday, 02:00 PM
-
by freakaftr8So this laptop seems to have some kind of failure. I bought it second hand and originally the previous owner said that they went to turn it on and it was presented with a quick flash of the power light the keyboard lit up and then the keyboard shut off and the power light went off as well but the battery indicator was white and after about 5 to 7 Seconds flashes orange really quick then shuts off and goes back to White. If the power button is pressed again the keyboard lights up really quick and then repeats. When I got it I could press the power button multiple times the keyboard light would...Yesterday, 10:58 PM
-
yesterday i bought this [ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"251","title":"corrossiom.png","width":"354","data-attachmentid":3238358}[/ATTACH]
I was not high on caffeine but the specs we nice-[LIST][*]Processor: AMD Ryzen 5 4600H 6 x 3 - 4 GHz, Renoir-H (Zen 2)[*]Graphics adapter: AMD Radeon RX Vega 6 (Ryzen 4000/5000)[*]Ram: 16gb DDR4[/LIST]so i bought it now i need schematics and help trouble shooting this all i saw is this burned cap idk what...03-19-2024, 05:00 AM -
by L3gitHi everyone! I found this TV on the curb of a residential area. I don’t know if it’s an easy fix, if so I could maybe use a spare TV for one of the rooms. Also to note I think it may have water damage since I picked up after this past rainy weekend. I’ve attached pictures of the TV and possibly the damage as well.For starters I’m just an amateur in understanding how to repair devices but I would like to learn. Also I know a little bit of soldering as long as it’s not complicated. I would like some insight if it’s worth repairing or not. Thank you for taking the time to help me!5 PhotosYesterday, 03:31 PM
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by chth96I have an 21 inch CRT TV which is not able to power on.
I disassembled 21 inch CRT TV and measured voltage of main filter capacitor(Samhwa HC 400WV 220uF) in the circuit.
It shows 270V on my DMM.
So I discharged this main filter capactior completely and detached circuit board from cathode-ray tube.
Then I desoldered this main filter capacitor from circuit board.
But I noticed that this desoldered large capacitor(Samhwa HC 400WV 220uF) is slowly charged by itself until it reached 0.6V
I measured its ESR value with MESR-100 and it shows 0.1 ohm,judging...-
Channel: General Capacitor Questions & Issues
Yesterday, 08:56 AM -