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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: 41,982
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235 | 41,982 |
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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: 3,187
Posts: 32,703
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3,187 | 32,703 |
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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: 4,498
Posts: 74,847
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4,498 | 74,847 |
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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: 3,977
Posts: 44,362
Last Post:
Identifying component Flyback? DC-DC?
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3,977 | 44,362 |
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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: 6,824
Posts: 37,360
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6,824 | 37,360 |
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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: 5,450
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501 | 5,450 |
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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: 31,946
Posts: 304,873
Last Post:
LA-E801P Schematic
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31,946 | 304,873 |
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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: 5,323
Posts: 75,711
Last Post:
Screwed onto the board. Thoughts?
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5,323 | 75,711 |
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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: 27,457
Posts: 374,837
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27,457 | 374,837 |
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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: 4,183
Posts: 65,246
Last Post:
ASUS ROG THOR 1200W PLATINUM PSU
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4,183 | 65,246 |
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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: 302
Posts: 1,669
Last Post:
Pantum P2502W Toner Reset Chip help
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302 | 1,669 |
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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: 2,327
Posts: 27,492
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2,327 | 27,492 |
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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: 224
Posts: 3,910
Last Post:
9V relay temperature 40C
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224 | 3,910 |
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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: 1,002
Posts: 10,881
Last Post:
Xbox 360E model:1538 not turning on
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1,002 | 10,881 |
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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: 1,380
Posts: 19,414
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1,380 | 19,414 |
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-
I am working on ACER Aspire A515-54-74LM Serial # NXHNAAA00693913C647600 (SNID: 93908099676 ). Motherboard DA0ZAWMB8G0 Rev.G (UMA, no video chip on this board). It turns on fine but when booting to Windows 11, it just keep loading. The Windows ring is continously spinning & does not proceed anywhere. I tried with another known good SSD Card with 100% Windows 11 bootable from this SSD., & result if still the same. BIOS ME Region has been cleaned, same result with old & new BIOS bin files. No Liquid spill anywhere on the main motherboard or the SSD Connector. What is the next step I...05-07-2024, 12:34 PM
-
[FONT=Calibri]Hello, I want to buy BGA balls (not stencils, only balls) but I don't know what size, it's just for reballing the new chip balled if the first attempt fail. So I will rarely use it. Probably chips are PMIC with max 60 balls. I don't need to reball EC chips from laptops of big chips like that.[/FONT]
[FONT=Calibri]So what are the 2 or 3 most used BGA balls sizes I should have for cover the jobs please ?[/FONT][FONT=Calibri]Hello, I want to buy BGA balls (not stencils, only balls) but I don't know what size, it's just for reballing the new chip balled if the first attempt fail.Today, 02:18 PM -
Hi all ! I really need help with my motherboard! consumption 20V / 0.060-0.280 A is unstable! not detected in DFU! There is no picture on either the external or internal monitor!
PPBUS_G3H=12,61v
PPBUS_HS_CPU=12.61v
PPDCIN_G3H=19.94v
PP5V_G3S=5.12v
PP5V_S5_LDO=5.12v
PP3V3_G3H_RTC=3.3v
PP3V3_G3H=3.3v
PP3V3_G3SSW_SNS=[B][COLOR=#c0392b]2.3-2.6v[/COLOR][/B] is unstable!
PP3V3_G3S=3.3v
PP3V3_TBT_X_S0=[B][COLOR=#d35400]0v[/COLOR][/B]
PP2V7_NAND=2.513v
PP1V8_G3S=1.8v
PPVCC_S0_CPU=[B][COLOR=#d35400]0v
[/COLOR][/B...
Today, 11:56 AM -
I have a A2141 which fails DFU with error code shown in image.
Now instead of DFU it says "Recovery"
A little back ground on this laptop. I was thinking of writing a topic on corporate laziness and irresponsibility.
We acquired a handful of laptops which a very large company wanted to have shredded due to sensitive information.
Since apple has NSA grade drive formatting I think this is inexcusably lazy that the IT department doesn't just target mode format the drives and release the MDM, and donate the laptops.
Personally I think a large company...Today, 01:48 PM -
Can I ask you guys help me identify this godforsaken component?
I'm tearing my hair out finding this component.
The board is from an egg incubator.
i got it with a "popped cap" while there are many damaged components on it, which got succesfully identified with one exception:
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3267072}[/ATTACH]
And here is the board where it came from (U1/1):
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3267073}[/ATTACH]...Yesterday, 08:21 AM -
Hi guys,
I have a Gigabyte GTX 1080 G1 Gaming 8GB gpu. The earlier life of this gpu is unknown.
Fans are spinning on full speed.
All main voltages presents but gpu not detected by motherboard.
The voltage on pin 1 of the bios is constantly 1.8V
During visual inspection i noticed a brown spot on the top of the chip.
Maybe burned this GPU?
Does anyone have an idea where I should go next?
How do I check if the GPU is still alive?
[URL=filedata/fetch?filedataid=336585][ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3267995}[/ATTACH][/URL]...Today, 01:24 PM -
Hello, this might be embarassing since I consider it a dumb question but keeps me kinda stuck sometimes in my journey.
I want to know if there is any post in this forum which explains my questions. [B]A)[/B] [B]When, where and how do I know when X voltage line is input or output. Example: [/B]
[URL=filedata/fetch?id=3266119&d=1715040463][ATTACH=JSON]{"alt":"Click image for larger version Name:\timage.png Views:\t0 Size:\t151.9 KB ID:\t3266119","data-align":"none","data-attachmentid":"3266119","data-size":"thumb"}[/ATTACH][/URL]...05-06-2024, 08:11 PM -
I have the above mentioned MBP, quick scan with thermal camera revealed that only U3200 was heating up. I found that C3208, C3219 and C3205 were all reading ~6.8ohms to ground.
so I swapped U3200.
I connected the PSU again for a quick check on thermal it's drawing about the same amount of current but now I'm seeing only heat radiating from U7800 and the T2 chip from under the black shielding fabric, and the bottom of the board.
It's hard to judge the actual temperature without removing the shielding.
Does anybody have any insights?
PPBUS_G3H is...04-23-2024, 06:07 PM -
This laptop came in as no internal display. I did see it boot on an external monitor but it was not consistent, however, the bios splash screen was consistent. The customer said it happened after a windows update. I tested the display and there were no signals on the LED_EN or PWM test points. At this point I decided to treat it as a bios issue. I disconnected the RTC battery and drained the residual power. After this, I did not get the bios splash screen anymore. The power led changes colour, fans spin, GPU and CPU get warm and caps lock is functional. I tried the bios from the Clevo repo, there...Today, 12:35 PM
-
Hi,
working on a ASUS ROG STRIX GL702VSK 60NB0DZ0-MB1260 that does not power on. At the PQ8900 PIN2 (P_CHG_ACMOS_G_20) I am receiving 24.7V and PIN1 (P_CHG_ACMOS_S_20) 20V, however when I place the PQ8901 P_CHG_ACMOS_G_20 it drops 0V. I don't have the replacement mosfets ( N-MOSFET QM3058M6AC PRPAK5*6
UBIQ) however will any N-channel mosfet with similar parameters work ? I also found that PCI8703, PCI8701 are shorted. any help would be grateful.05-07-2024, 04:34 PM
-
Hi all ! I really need help with my motherboard! consumption 20V / 0.060-0.280 A is unstable! not detected in DFU! There is no picture on either the external or internal monitor!
PPBUS_G3H=12,61v
PPBUS_HS_CPU=12.61v
PPDCIN_G3H=19.94v
PP5V_G3S=5.12v
PP5V_S5_LDO=5.12v
PP3V3_G3H_RTC=3.3v
PP3V3_G3H=3.3v
PP3V3_G3SSW_SNS=[B][COLOR=#c0392b]2.3-2.6v[/COLOR][/B] is unstable!
PP3V3_G3S=3.3v
PP3V3_TBT_X_S0=[B][COLOR=#d35400]0v[/COLOR][/B]
PP2V7_NAND=2.513v
PP1V8_G3S=1.8v
PPVCC_S0_CPU=[B][COLOR=#d35400]0v
[/COLOR][/B...
Today, 11:56 AM -
I have an Asus G14 (GA401QM) that has a power issue. Originally the board had a shorted 5V rail and dead EC. I reballed a working EC, soldered it on, and I resolved the 5V issue by replacing the APL6012 and the low side 5V mosfet. Resistances on all power rails are healthy now, but 20V does not make it through the first MOSFET. 20V is present on the drain of the first MOSFET, but there is no voltage on the gate or source.
When diagnosing this issue, I thought that the issue was due to the BQ24800 chip not outputting the correct signals so I soldered on a known working chip and the...Yesterday, 01:30 PM -
Any help with
Lenovo ThinkPad L13 Gen 1
Serial: R9117ESC
EC: 256KB
Plz remove password.
Thank you....Today, 11:53 AM -
Hi,
working on a ASUS ROG STRIX GL702VSK 60NB0DZ0-MB1260 that does not power on. At the PQ8900 PIN2 (P_CHG_ACMOS_G_20) I am receiving 24.7V and PIN1 (P_CHG_ACMOS_S_20) 20V, however when I place the PQ8901 P_CHG_ACMOS_G_20 it drops 0V. I don't have the replacement mosfets ( N-MOSFET QM3058M6AC PRPAK5*6
UBIQ) however will any N-channel mosfet with similar parameters work ? I also found that PCI8703, PCI8701 are shorted. any help would be grateful.05-07-2024, 04:34 PM -
Hi friend, I've this notebook HP Gaming 16-a0006nl with QUANTA DAG3JBMB8D0 that won't power on.
I start checking first mosfet and they seems to be ok.
On power button I get 3 that go to 0 on pressing, and come to 3v on release.
After I check charge ic that is BQ738H
I write here measure with battery and ac
19
19
19
25
3
1.9
0
3.1
3.1
1
11
11
11
gnd
0
6
10
11
11
19
I've 0 on pin 7 IOUT and on pin 15 LODRV.
...Yesterday, 07:09 AM -
[FONT=Calibri]Hello, I want to buy BGA balls (not stencils, only balls) but I don't know what size, it's just for reballing the new chip balled if the first attempt fail. So I will rarely use it. Probably chips are PMIC with max 60 balls. I don't need to reball EC chips from laptops of big chips like that.[/FONT]
[FONT=Calibri]So what are the 2 or 3 most used BGA balls sizes I should have for cover the jobs please ?[/FONT][FONT=Calibri]Hello, I want to buy BGA balls (not stencils, only balls) but I don't know what size, it's just for reballing the new chip balled if the first attempt fail.Today, 02:18 PM -
I have a A2141 which fails DFU with error code shown in image.
Now instead of DFU it says "Recovery"
A little back ground on this laptop. I was thinking of writing a topic on corporate laziness and irresponsibility.
We acquired a handful of laptops which a very large company wanted to have shredded due to sensitive information.
Since apple has NSA grade drive formatting I think this is inexcusably lazy that the IT department doesn't just target mode format the drives and release the MDM, and donate the laptops.
Personally I think a large company...Today, 01:48 PM -
Hi guys,
I have a Gigabyte GTX 1080 G1 Gaming 8GB gpu. The earlier life of this gpu is unknown.
Fans are spinning on full speed.
All main voltages presents but gpu not detected by motherboard.
The voltage on pin 1 of the bios is constantly 1.8V
During visual inspection i noticed a brown spot on the top of the chip.
Maybe burned this GPU?
Does anyone have an idea where I should go next?
How do I check if the GPU is still alive?
[URL=filedata/fetch?filedataid=336585][ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3267995}[/ATTACH][/URL]...Today, 01:24 PM -
This laptop came in as no internal display. I did see it boot on an external monitor but it was not consistent, however, the bios splash screen was consistent. The customer said it happened after a windows update. I tested the display and there were no signals on the LED_EN or PWM test points. At this point I decided to treat it as a bios issue. I disconnected the RTC battery and drained the residual power. After this, I did not get the bios splash screen anymore. The power led changes colour, fans spin, GPU and CPU get warm and caps lock is functional. I tried the bios from the Clevo repo, there...Today, 12:35 PM
-
does anybody have Schematic and board view [B]Mac Mini 2018 model A1993 MLB 820-00939-A - does not boot, [/B]does anybody have Schematic and board view [B]Mac Mini 2018 model A1993 MLB 820-00939-A - does not boot, [/B]Today, 10:06 AM