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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: 734
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45 | 734 |
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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: 45,229
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235 | 45,229 |
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| Document & Software Archive | ||||||
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Schematics and Boardviews
Share or download schematics and boardview files. Contribute your knowledge or ask questions. Before using please read our Terms of Service.
Topics: 923
Posts: 973
Last Post:
Acer Aspire 4250 Laptop Schematic
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923 | 973 |
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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: 3,226
Posts: 32,942
Last Post:
MacBook a1990 what capacitor is this?
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3,226 | 32,942 |
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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: 4,541
Posts: 75,129
Last Post:
Decrypt Keychain file
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4,541 | 75,129 |
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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: 4,096
Posts: 45,343
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4,096 | 45,343 |
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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: 7,240
Posts: 40,157
Last Post:
AMD Radeon Pro W5700 Schematics Needed
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7,240 | 40,157 |
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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: 511
Posts: 5,517
Last Post:
3COM OfficeConnect Gigabit Switch 16
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511 | 5,517 |
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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: 33,992
Posts: 332,206
Last Post:
Lenovo Yoga Slim 7 Pro 14IHU5
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33,992 | 332,206 |
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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: 5,364
Posts: 76,049
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5,364 | 76,049 |
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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: 27,750
Posts: 379,142
Last Post:
TCL 43S431 Backlight issue or Power Supply
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27,750 | 379,142 |
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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: 4,240
Posts: 65,757
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4,240 | 65,757 |
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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: 320
Posts: 1,732
Last Post:
Need firmware for HP 4103dw
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320 | 1,732 |
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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: 2,410
Posts: 27,996
Last Post:
marantz sr6012 no sound
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2,410 | 27,996 |
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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: 264
Posts: 4,377
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264 | 4,377 |
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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: 1,065
Posts: 11,330
Last Post:
PS5 EDM-031 Cap values
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1,065 | 11,330 |
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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: 1,402
Posts: 19,757
Last Post:
SEF 551.10 - Error starting the reflow oven.
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1,402 | 19,757 |
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| Specifications | ||||||
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Laptop, Tablet, & Notebook Specifications
Basic specifications for laptops, tablets, & notebooks. We are constantly adding new content like boardviews, schematics, fixes, and other data here.
Topics: 101,076
Posts: 101,076
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101,076 | 101,076 |
09-07-2024, 07:20 AM
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Server, iMac, & Desktop PC Specifications
Basic specifications for server, iMac, & desktop computers. We are constantly adding new content like boardviews, schematics, fixes, and other data here.
Topics: 8,712
Posts: 8,712
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8,712 | 8,712 | ||||
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Hi there, I recently got my hands on a few Radeon Pros that are not functioning. I've tried searching for the schematics for this board but I can't seem to find anything. If someone could drop the schematics for this model it would be very appreciated.Today, 07:27 PM
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[B]Problem[/B]
Fixing a dimming zone TV with LEDs not lighting up. Dimming zone circuit introduces added variable to diagnose LED and/or Dimming Zone Driver board? Some 1/2 rows of LEDs appears to be out in active dimming zone off AND some brightness flickering with active dimming zone high while playing changing video
[URL=filedata/fetch?id=3481101&d=1728586653][ATTACH=JSON]{"alt":"Click image for larger version Name:\tIMG_3288.jpg Views:\t3 Size:\t2.62 MB ID:\t3481101","data-align":"none","data-attachmentid":"3481101","data-size":"thumb"}[/ATTACH][/URL]...10-10-2024, 01:16 PM -
I need help please.
I purchased a new screen for this laptop, I do see a very dim picture but the backlight isn't working.
I tested the screen with another laptop and it's working fine, so I am trying to figure out what's wrong with this motherboard.
These are the measurement I ve taken:
+LEDVDD = 19V
DISPOFF_N = 3.3V
INVT_PWM = 0.126V
CPU_EDP_HPD = 2.42V
+LCDVDD_CON = 3.3V
Any idea what should I check next?
Could the problem be with the bios?
(Bios, boardview and schematic attached)...Today, 10:13 AM -
Hello, do you know what it is this component marked RX please ? I can't find it. Probably it is a part of serie, because I saw another marked RW....Today, 02:33 PM
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Hi, I'm trying to fix my buddies rechargeable led work light made by olight and the model is odiance. For some reason now after a couple years of no issue, when powered off now, the led is faintly lit on 3 of the orange rows but as you can see from the first pic that's not where the leds are. The part that is faintly lit is beside the leds? Anyone know how that is possible? Is there small voltage still coming in somehow? The third pic is with the cover off....10-13-2024, 10:33 PM
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Hello Guys
I have a ASUS Rog strix laptop that I bought recently to fix and the previous owner spilled water on it . He brought it into a repair shop for them to check it out and instead of fixing it they damaged the battery connector of the laptop ! Other than that they damaged damaged nothing . But since the liquid damage the laptop only turns on and the keyboard lights up and then immediately turns off. I really want to repair this laptop and I also have experience in repairing phones etc and laptops and a bit of soldering but the diagnosing part is where I need help with and...Today, 10:45 AM -
I need help please.
I purchased a new screen for this laptop, I do see a very dim picture but the backlight isn't working.
I tested the screen with another laptop and it's working fine, so I am trying to figure out what's wrong with this motherboard.
These are the measurement I ve taken:
+LEDVDD = 19V
DISPOFF_N = 3.3V
INVT_PWM = 0.126V
CPU_EDP_HPD = 2.42V
+LCDVDD_CON = 3.3V
Any idea what should I check next?
Could the problem be with the bios?
(Bios, boardview...Today, 08:21 AM -
I have an M1 MacBook Air (A2337) 2020 that came in for water damage and will not turn on. Upon opening it, I saw that the audio board was severely corroded. I disconnected it, and the device started working.
After that, I dealt with the issues on the audio board by removing the capacitors that were shorted to ground, and the device started working. However, I encountered another problem: I can't access the recovery options by pressing and holding the power button. I'm not sure if it's a hardware issue or if the recovery partition has been lost. Currently, the system's time isn't updating,...10-14-2024, 06:43 AM -
I was wondering if anyone else has come across this problem. What was the problem?, and was it solved. I recently picked up 2 of these tvs and both initially diagnosed as bad backlights. When turned on, the backlights flash the red logo screen. Sound and an image is clear using a flashlight. So I buy 2 sets of leds. When they arrive I take one tv apart and test the leds before removing them. OMG they all work. but I put the new ones in anyway. So I think its the power supply. I swap PS from one to the other and same results. Now here is the issue and really confused me. I reset the tv using...Yesterday, 04:29 PM
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I am trying to fix this tv that has image and sound but no backlight. Replaced all led strips and each strip turns on using a led tester but do not get any backlight when the tv turns on.
I disconnected the main board from the PS but still no backlight.
Looking at previous threads, nothing is jumping out at me and I'm stumped.
Here are the voltage measurements:
ON STATE
CNM803 on PSU from Main
Pin 1 A13v - 13.09v
Pin 2 OD_UD - 3.3v
Pin 3 A13v - 13.09v
Pin 4 BLU_PWM - 1.6v
Pin 5 A13v...10-09-2024, 07:28 AM
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Hello Guys
I have a ASUS Rog strix laptop that I bought recently to fix and the previous owner spilled water on it . He brought it into a repair shop for them to check it out and instead of fixing it they damaged the battery connector of the laptop ! Other than that they damaged damaged nothing . But since the liquid damage the laptop only turns on and the keyboard lights up and then immediately turns off. I really want to repair this laptop and I also have experience in repairing phones etc and laptops and a bit of soldering but the diagnosing part is where I need help with and...Today, 10:45 AM -
I need help please.
I purchased a new screen for this laptop, I do see a very dim picture but the backlight isn't working.
I tested the screen with another laptop and it's working fine, so I am trying to figure out what's wrong with this motherboard.
These are the measurement I ve taken:
+LEDVDD = 19V
DISPOFF_N = 3.3V
INVT_PWM = 0.126V
CPU_EDP_HPD = 2.42V
+LCDVDD_CON = 3.3V
Any idea what should I check next?
Could the problem be with the bios?
(Bios, boardview and schematic attached)...Today, 10:13 AM -
Hi there, I recently got my hands on a few Radeon Pros that are not functioning. I've tried searching for the schematics for this board but I can't seem to find anything. If someone could drop the schematics for this model it would be very appreciated.Today, 07:27 PM
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Hi Everyone. I have a Mac for a topcase replacement. I have completed the job however the Mac will boot and I get the startup chimes but not pass the Apple Logo, not even a progress bar. After a few seconds the fan spins fast. The board is 820-01598-A. I have disconnected everything except the USB ports and display and the issue persists. I am drawing 20.42v and .461A with just the screen connected so it looks like it is booting. I have looked over the board with a scope and I do not see anything that appears wrong. I can not get into diagnostics, NVRAM reset or DFU. The only issue is the topcase...Today, 03:32 AM
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Hello friends, i'm stuck....
I have this board not taking current.
When i plug DC jack, current stop at 1rst mofset and i get 0V on PIN 18 DCIN of IC CHARGE (ISL9238) (i get 0V every pin of IC)
I don't found any short for now.
On type C I get CC1 or CC2 at 5V and that's all, no VBUS nothing else...
I dont know where to look now...
Any help please?
I dont find the exact shematic only the 1A version and boardview miss all the line.
I can post the shematic i have and boardview if you want.
Thank...Today, 10:02 AM -
Hello, do you know what it is this component marked RX please ? I can't find it. Probably it is a part of serie, because I saw another marked RW....Today, 02:33 PM
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Background:[LIST][*]Hisense 65H6570G stopped working and I root caused to a burnt out LED in the backlight. (For anyone interested the power light pattern when the backlight has gone is 1) two long flashes, 2) a very short third flash, then 3) back to solid red ) [ATTACH=JSON]{"alt":"Click image for larger version Name:\t20240916_202822.jpg Views:\t0 Size:\t2.72 MB ID:\t3486172","data-align":"none","data-attachmentid":"3486172","data-size":"custom","height":"400","title":"burnt...Today, 02:29 PM
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Gentlmens please help. Need bios for Lenovo Flex 7 14IRU8
I upload my original dump. S/N - PW07X6FQ...Today, 03:20 AM -
Picked this one up today.
No signs of life whatsoever. No red led light from the IR module.
Disconnected the mainboard to see if PSU was working and it was (LED backlights lit up).
Checked the power button for continuity when buttons were pressed and I got readings.
Disconnected various components (speaker, wifi module) with no difference.
Checked mainboard's fuses (found 3) and they were all good.
I looked on shopjimmy to see what components I may have been missing and I saw that they were selling EEPROMs.
Then it dawned...10-12-2024, 11:20 PM -
I need help please.
I purchased a new screen for this laptop, I do see a very dim picture but the backlight isn't working.
I tested the screen with another laptop and it's working fine, so I am trying to figure out what's wrong with this motherboard.
These are the measurement I ve taken:
+LEDVDD = 19V
DISPOFF_N = 3.3V
INVT_PWM = 0.126V
CPU_EDP_HPD = 2.42V
+LCDVDD_CON = 3.3V
Any idea what should I check next?
Could the problem be with the bios?
(Bios, boardview...Today, 08:21 AM