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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: 46
Posts: 735
Last Post:
Capacitor nominal value
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46 | 735 |
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Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
Topics: 239
Posts: 48,967
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239 | 48,967 |
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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: 2,155
Posts: 2,440
Last Post:
DELL XPS 15 9570 Laptop Board View
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2,155 | 2,440 |
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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: 57
Posts: 66
Last Post:
INTERSIL 9238HX126HV datasheet
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57 | 66 |
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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: 3,246
Posts: 33,129
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3,246 | 33,129 |
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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: 4,567
Posts: 75,343
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4,567 | 75,343 | ||||
| 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: 4,204
Posts: 46,260
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4,204 | 46,260 | ||||
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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: 7,697
Posts: 43,208
Last Post:
M720q Desktop (ThinkCentre)
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7,697 | 43,208 |
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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: 528
Posts: 5,627
Last Post:
Hardware firewall to block ad servers?
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528 | 5,627 |
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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: 36,113
Posts: 364,403
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36,113 | 364,403 |
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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: 5,418
Posts: 76,305
Last Post:
Viewsonic G810 vertical deflection problem
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5,418 | 76,305 |
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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: 28,055
Posts: 383,045
Last Post:
Samsung Power Supply Board BN44-00874F
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28,055 | 383,045 |
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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: 4,308
Posts: 66,332
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4,308 | 66,332 |
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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: 337
Posts: 1,804
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337 | 1,804 |
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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: 2,486
Posts: 28,480
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2,486 | 28,480 | ||||
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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: 303
Posts: 4,741
Last Post:
Hofmann geodyna 6300 Wheel balancer
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303 | 4,741 |
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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: 1,138
Posts: 11,811
Last Post:
PS5 EDM-033 capacitor value
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1,138 | 11,811 |
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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: 1,410
Posts: 19,837
Last Post:
Using my CH341A.
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1,410 | 19,837 |
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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: 101,079
Posts: 101,090
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101,079 | 101,090 |
by SMDFlea
03-18-2025, 04:45 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: 8,716
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8,712 | 8,716 |
by nico68
12-21-2024, 01:21 PM
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I have a G810 monitor i've had for years but it has developed a problem with vertical collapse. Is there anybody here who has worked on these and can help me find where the circuit even is for the vertical deflection?Today, 07:57 PM
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i'm new to fixing ipads. i've replaced a few ports but i've not done any other troubleshooting so i'm trying learn more. What voltage should read on the battery terminal if the battery isn't connected but the charging cable is connected? i'm getting a reading but it's not stable03-29-2025, 03:35 PM
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I have an MSI B360M Bazooka with a dead short on the 3VSB rail (and VDD33 which is connected). The ethernet controller chip (UL3 in boardview) was getting very hot, so I thought that was the culprit. But after I removed it, the short remained. When I added 5V standby power again, I noticed the ground pad where the ethernet controller had been was getting very hot, as was the nearby hole for an m2 standoff.z
I haven't found the problem component(s) causing the short yet (no thermal cam). Does the heating of the ground pad mean it should be something near there?Today, 07:20 PM -
Hi everyone.
Found some topics here for the same issue, on the same board, but none with all the same values I have or same steps to correct it. And I could not get usefull information from it.
So... M1, board 820-02016-A, stuck at 5V. Current is 0.08A and from time to time it jumps to 0.13A and back.
I measured:
L5230 - 5.1V
LC320 - 0V (no short)
LP800 - 0V (no short)
L5840/5820/5800 - 3.8V
F5200 - 12.29V (according to an entry on repair.wiki "If the voltage is approximately 12.28-12.35V, it may indicate a communication issue between...03-29-2025, 04:55 PM -
Hi there,
First, I'm not sure it's the right section to post for this type of device, but could not think of something better.
Ok, so my son (a mechanic) bought a faulty Hofmann Geodyna 6300 wheel balancer (which appears to be mostly a re-branded Snap-on wheel balancer).
I'm looking for any resources (doc, manuals, schematics) that would be available for this device or anyone that would have any knowledge on this particular device (or its Snap-On equivalent).
I'm trying to diagnose the fault(s ?), but I can't find any schematic (appart from the...Yesterday, 05:29 AM -
Just bought this for 10 bucks yesterday hoping to fix it. The guy said water dropped inside from a dehumidifier hose and it started showing black and white vertical bars then went blank. When I got it home and turned it on it came on fine and displayed correctly but I was noticing faint vertical bars in the image. After a little bit I turned it off and back on and it was a black screen again. I opened it up to check for water damage and corrosion but didn't find anything of the sort. I cleaned the ribbons anyway and reconnected them but still got a blank screen. If I disconnect the right side...03-29-2025, 11:02 PM
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Samsung Chromebook 4 corporate lock, I need these bios unlocked. I'd appreciate your help
Mode code: XE310XBA-KT3BR
BA41-02783D REV: 1.4
JAN-11/15 MAIN
XE310XBA-KT3BR
SN: 09WZ9QBT716759M...03-27-2025, 05:54 PM -
Hello esteemed members. I appreciate that my question will strike some as being somewhat childishly simple, but it genuine perplexes me! I have repaired several laptops before by removing a faulty capacitor that was short-circuiting the motherboard, whereupon the laptop would then work. For me, it begs the question that, if the current can bypass where the capcitor was when it has been removed, why didn't it just bypass it when it was present and faulty,? I can't get my head round the premise that if the other side of the capacitor is connected to ground, then why doesn't the current simply bypass...Today, 10:33 AM
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Hello,
I have a Lenovo here that does not want to power on. The motherboard appears to be clean, no sign of corrosion or obvious fried components. When plugged in, I see 3 blinking lights and then off. It would cycle the 3 blinking lights every 10 seconds or so as long as I have the adapter plugged in. Amp meter shows 20 volts, 0.224 amps, no fan spin, red light indicator near the charge port.
Thermal camera shows a section of the motherboard that is warmer than the rest. It is near the connector labels JRTC1 (CMOS battery). Diode measurement to ground for pin 1 = OL,...03-25-2025, 05:56 PM -
Hello everyone, I have a MacBook Pro 13” 2020 (Four ports) (Model A2251 with the 820-01949-A logicboard). It had some minor liquid damage but I carefully cleaned the logic board with alcohol and let it dry as needed. Now I encounter following situation: The MacBook does start but the Battery is not charging when a cable is plugged in any of the ports (I use the powerbrick and cable that came with the device). It had some charge left, so I could safe some data, but I was limited my the 13% and the speed of airdrop. The liquid-damage is almost only limited to the side of the logic board where...03-24-2025, 11:09 AM
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I have a G810 monitor i've had for years but it has developed a problem with vertical collapse. Is there anybody here who has worked on these and can help me find where the circuit even is for the vertical deflection?Today, 07:57 PM
-
I have an MSI B360M Bazooka with a dead short on the 3VSB rail (and VDD33 which is connected). The ethernet controller chip (UL3 in boardview) was getting very hot, so I thought that was the culprit. But after I removed it, the short remained. When I added 5V standby power again, I noticed the ground pad where the ethernet controller had been was getting very hot, as was the nearby hole for an m2 standoff.z
I haven't found the problem component(s) causing the short yet (no thermal cam). Does the heating of the ground pad mean it should be something near there?Today, 07:20 PM -
Hey guys, I got this model which stays black screen but CPU heats up. All voltages on board seems oK.
Perhaps BIOS issue?
Brand: Asus
Model: F1502Z
SN: R4N0CV11S622169
Board: X1403ZA 2.2
I have flashed this BIOS for test purposes and it lights up the ASUS but blank SN. [URL]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/108429-asus-f1603z-x1403za-r2-1-bios?p=3593121#post3593121[/URL]
Can you clean and enter SN for me please...Yesterday, 05:04 PM -
hello guys l have an [B]hp elitebook 840 g3 board number 6050A2892401 MB A01 it's not turning on checked first moseft 19v is present but on the current sensor am getting 4.2v l tried to changed the first moseft but am still getting 4.2v on the current sensor.
I tried to trigger the first moseft drain and source pins using a twizzer when l checked on the current sensor 19v was now present ,the moment l removed the twizzer on drain and source voltage drops to 4.2v
what could be the issue[/B]hello guys l have an [B]hp elitebook 840 g3 board number 6050A2892401 MB A01 it's not turningYesterday, 03:49 AM -
Hi guys, I’m back here my friend give me her tv, that doesn’t turn on and no standby red led. When u plug in the cord the red led of one two second is on, then turn off. If you push the power button or the remote the red led blinks but nothing happen. I give u some photo with voltage, don’t look the fuse….because I blow it for mistake nd I dint have the right replace so I just put it for test the tv. The standby voltage should be 11,88 volt on the diode, but I have 13 volts. I put in the photo the different volts I test and there are someone negative…I don’t know if it s normal. On...03-17-2025, 04:23 AM
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Hello esteemed members. I appreciate that my question will strike some as being somewhat childishly simple, but it genuine perplexes me! I have repaired several laptops before by removing a faulty capacitor that was short-circuiting the motherboard, whereupon the laptop would then work. For me, it begs the question that, if the current can bypass where the capcitor was when it has been removed, why didn't it just bypass it when it was present and faulty,? I can't get my head round the premise that if the other side of the capacitor is connected to ground, then why doesn't the current simply bypass...Today, 10:33 AM
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Hey everyone,
This power supply board is hard to find but there are repair kits available. This board had a blown fuse, FP801S, blown PFC MOSFET, QP802CS and ceramic cap, CP809. I replaced them with parts I already had and tested the rest of the parts that would've come in the repair kit and they were fine. I powered the board up on the bench expecting, in typical Samsung power supply board fashion, to see all my output voltages but, nothing. 0 volts on CNL801, CNM801 and CNT801. The only thing I have is 170vdc on the filter caps. No standby voltage either.
Anybody...03-17-2025, 06:20 AM -
hi,
when I power ON this laptop it give me this red warning message:
[B]"the detected discrete gpu VBIOS is not meant for this system, press Enter to continue"[/B]
Machine start and works properly. I was also able to update machine BIOS to last version 1.06.
I attach here a copy of the orginal VBIOS stored on GPU flash memory chip.
Thanks so much for help.hi,
when I power ON this laptop it give me this red warning message:
[B]"the detected discrete gpu VBIOS is not meant for this system, press...Today, 04:03 AM -
Hi i bought laptop for repair. Laptop turn on but no picture. I want to try with bios repair, ive dumped bios from winbound ic and its complete empty. All bios is FFF... Now i know that win licence is gone but still want to repair. What to do in that case?
Model: Fa506IU-AL006
Motherboard: DABKXBMBAD0 rev. D
Bios chip ic: 25Q128FWSQ
Computer has been in repair shop before me....Yesterday, 10:05 AM -
Hello everyone, I have an [B]ASUS FX506LI[/B] laptop that does not turn on, and I need help diagnosing the issue. Here is what I have checked so far:
[B][B]Initial Symptoms:[/B][/B][LIST][*]The laptop has [B]no power[/B] at all (no LEDs, no fan spin).[*][B]No 3.3V or 5V[/B] present on the board.[*]The [B]power button (NBSWON#) reacts[/B] but only changes from 0V to 0.5-0.11V.[/LIST][B][B]Power Rail Checks:[/B][/B][LIST=1][*][B]Charger input (FETs PKCH2BB)[/B][LIST][*][B]Drain: 20V[/B], [B]Source: 0V[/B], [B]Gate: 0V[/B] (FETs not switching).[/LIST][*][B]BQ24780S Charger IC:[/B][LIST][*][B]VCC...03-30-2025, 03:38 AM