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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: 41,790
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235 | 41,790 |
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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: 1
Posts: 4
Last Post:
ncp81208 datasheet
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1 | 4 |
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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: 3,183
Posts: 32,691
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3,183 | 32,691 |
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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: 4,497
Posts: 74,820
Last Post:
Windows 10 key?
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4,497 | 74,820 |
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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: 3,969
Posts: 44,312
Last Post:
Auto Power-On After Outages: Advice?
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3,969 | 44,312 |
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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: 6,804
Posts: 37,258
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6,804 | 37,258 |
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Sub-Forums:
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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: 501
Posts: 5,444
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501 | 5,444 |
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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: 31,831
Posts: 303,387
Last Post:
Vostro 15 3578
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31,831 | 303,387 |
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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: 5,320
Posts: 75,699
Last Post:
Asus VG278 mosfet identification ?
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5,320 | 75,699 |
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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: 27,443
Posts: 374,644
Last Post:
Samsung ue49mu6120
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27,443 | 374,644 |
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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: 4,180
Posts: 65,222
Last Post:
14V adapter for 19V monitor
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4,180 | 65,222 |
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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: 301
Posts: 1,665
Last Post:
Epson l3110 dump
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301 | 1,665 |
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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: 2,319
Posts: 27,435
Last Post:
TEAC AG 980 going protection mode
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2,319 | 27,435 |
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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: 222
Posts: 3,898
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222 | 3,898 |
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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: 1,001
Posts: 10,868
Last Post:
DJI FPV goggles, dead backlight
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1,001 | 10,868 |
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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: 1,376
Posts: 19,385
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1,376 | 19,385 |
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I'm looking for ways to ensure that my desktop computer automatically powers on once the power is restored after an outage. I've heard suggestions about shorting the front panel I/O connector on the motherboard or shorting the SMPS 20/24 pin to accomplish this. However, I'm uncertain if these methods are both effective and safe.Today, 08:38 AM
-
Hi,
i've got for repair Lenovo L340-15IRH fg541/fg741 nm-c362 rev 1.0, laptop have instant short 20v 0.20amp draw, lv5083a goes to 100degree, i've removed 1 shorted cap next to the IC and short still remain, from look of it short comes from legs 16-25, i can't find what this IC i believe is 3/5V regulator?
First mosfets normal 20v Source and drain and Gate 25v...Yesterday, 11:43 AM -
Hi everyone. I'm new on this things, this is my first amplifier after I start offering repair service almost for free, just for learning purpouse
So I have a amp that is going to protection mode. I saw that if I remove the ribbon cable which sends from main board B+,B- and signal for amplifiers card, is not going to protection mode.
So, from that ribbon cable y disconnect everything but b+ b-, and amp goes again to protection mode. So my guess was something is wrong in the amp board.
I disconnect all transistors and amp is ok.
After, I connect the...Today, 08:34 AM -
Hello everyone,
This is my first post after browsing this wonderful treasure trove of knowledge for many, many evenings. I've decided to learn how to fix these things, properly.
My patient is an A2338 Macbook Pro M1 (late 2020).
It had some corrosion around JT710 and JT700 caused by liquid spill, as well as against the protective barrier around the USB-C chips UF000 and UF100. So I took the main board out and cleaned it with a toothbrush and alcohol, then with alcohol in an ultrasonic cleaner. Cleaned the touchbar flex connectors as well. The board looks...04-22-2024, 06:45 AM -
Hello,
im actually trying to save a d1500 delay from yamaha. I found the service manual but schematic is missing and BOM list is a bit unclear as components listed have no reference linked to the pcbs... In my case, one zener diode was broken (114 code on the pcb in attached file) and couldn't be repaired : it was a zener type package. In the BOM list i found 3 reference on this board : 1S555 (can be replaced by 1N4148), RD4.7EB2 (approx 5v rectifier), RD7.5EB3 (approx 7v rectifier)...
Actually the cathode goes to VCC of sram M5M5118P, without this diode missing, i have...04-24-2024, 09:01 AM -
Hello everyone
i need bios LENOVO LEGION Y470S-15IMH
SN:MP1TC9JM
Code board :GLY5U LA-J931P REV 1.0
Problem no display.
this my bios no display👇
thanks for help 🙏...Today, 06:05 AM -
Hello,
Need compleet new bios for this HP.
The old bios is missing.
I tried to program a new one from HP with the CH341 but the screen remains black.
Please help.
Thanks...Today, 08:12 AM -
my laptop has a weird power-on issue.
Once the laptop has been powered on, it can restart/ wake just fine on battery power or Adapter, ONLY If i have not closed the LCD.
If i am running on battery and have closed the LCD (even momentarily). it will not power-on/ wake-up on battery power no matter the battery percentage.
but once i open the LCD and connect it to the adapter (even momentarily) it will wake up gain and I wont experience any issues till i close the LCD.
i do not know where to look for repair.
thank you all for any advice.​Yesterday, 04:36 PM -
Hi guys.
I ordered used LG 34UM88 monitor which should come with 19V 5.76 A adapter from LG.
I payed for monitor but sadly I got scammed it came with 14V 58W Samsung adapter.
Luckly I did not even tried to turn on monitor, but I think they used the 14V adapter.
Is it possible to use 14V adapter and what already damage could happen?04-24-2024, 11:04 AM -
I downloaded a BIOS file from Lenovo and once I extracted the actual BIOS from the executable, it is 16MB in size, but my IC(Winbond 25Q80DV) is only 8MB in capacity. I have read you can trim the BIOS file with a hex editor but I can't find any instructions on specifically what you will remove.04-27-2024, 10:55 AM
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Hello! I'm trying to resuscitate a Macbook that the local tech gave up on. I have the board view and schematic and have the main board out of the case.
Of the 4 usb-c ports, 3 cycle at 5V - they all go up to about 1.5A, then seem to switch off, back to 5V 0A, up to 1.5A, and off again. The cycle lasts a few seconds - maybe 3s.
The 4th port doesn't cycle and draws ~0.5A at 5V consistently. It seems it's the port linked to U3100 - it's on that side of the board and is the port closest to the battery and the CD3215C00 chips.
I've read that the CD3215s are...Today, 06:46 AM -
Hi, I need bios for :
HP model 22-A140XT
Serial: 6CN6150F3G
PRODUCT NUMBER: N1N09AAR#ABA
the problem is no display with all voltages ok...Today, 06:30 AM -
Hello everyone
i need bios LENOVO LEGION Y470S-15IMH
SN:MP1TC9JM
Code board :GLY5U LA-J931P REV 1.0
Problem no display.
this my bios no display👇
thanks for help 🙏...Today, 06:05 AM -
can anyone help me remove panasonic CF-LV8SDDZTF
model CF-LV8SDDZTF
serial 2HKCC48561
borad number DHLB1434ZC/X1
​...Yesterday, 06:02 PM -
Hey all,
I've got an ASUS laptop (Asus X409DL Rev 2.0) that had a little liquid spill on it however the majority was on the daughter board for the I/O stuff which is connected over a ribbon cable which I have disconnected for now. A small bit of liquid did however get onto what schematics and boardview show is a DC step down IC; a Realtek RT8249CQGW - markings: 2N=. There is no short on the main power rail as I have 19v with the charger plugged in however I have no other power, standby or always on rails anywhere on the board. Looking at the datasheet for this IC I want to sanity...Today, 05:49 AM -
I'm looking for ways to ensure that my desktop computer automatically powers on once the power is restored after an outage. I've heard suggestions about shorting the front panel I/O connector on the motherboard or shorting the SMPS 20/24 pin to accomplish this. However, I'm uncertain if these methods are both effective and safe.Today, 08:38 AM
-
Hi everyone. I'm new on this things, this is my first amplifier after I start offering repair service almost for free, just for learning purpouse
So I have a amp that is going to protection mode. I saw that if I remove the ribbon cable which sends from main board B+,B- and signal for amplifiers card, is not going to protection mode.
So, from that ribbon cable y disconnect everything but b+ b-, and amp goes again to protection mode. So my guess was something is wrong in the amp board.
I disconnect all transistors and amp is ok.
After, I connect the...Today, 08:34 AM -
Hello,
Need compleet new bios for this HP.
The old bios is missing.
I tried to program a new one from HP with the CH341 but the screen remains black.
Please help.
Thanks...Today, 08:12 AM -
Hi,
i've got for repair Lenovo L340-15IRH fg541/fg741 nm-c362 rev 1.0, laptop have instant short 20v 0.20amp draw, lv5083a goes to 100degree, i've removed 1 shorted cap next to the IC and short still remain, from look of it short comes from legs 16-25, i can't find what this IC i believe is 3/5V regulator?
First mosfets normal 20v Source and drain and Gate 25v...Yesterday, 11:43 AM -
Hello,
I've been working on this laptop for a few hours and I am stumped. Still learning this kind of troubleshooting. Hoping someone can help.
[U][B]Computer Information:[/B][/U]
Model: Lenovo IdeaPad Gaming 3 15ARH7
Motherboard model: NM-E211 Rev: 1.0
Schematic, Boardview, & FlexBV Free - Attached
[U][B]Problem:[/B][/U]
The computer does not charge the battery or power on also does not power on with power adapter only. Battery have no charge on it at all (reading mV on battery charge). When connecting the power adapter...04-29-2024, 01:27 PM