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Badcaps Capacitor & Electronics Repair Forum | ||||||
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All new members, PLEASE READ HERE FIRST! Posting only allowed by established members.
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Posts: 733
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45 | 733 | ||||
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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.
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ncp81208 datasheet
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1 | 4 | ||||
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Questions and answers for identifying whether your device has bad capacitors. Also post general capacitor-related questions and issues here.
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Posts: 32,703
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3,187 | 32,703 | ||||
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!
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Troubleshooting Hardware & Devices and Electronics Theory | ||||||
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If you have a general question concerning basic electronics theory or component function & usage, here's where it goes.
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Citronic AC-1USB Output Too Loud
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HP EliteOne 800 G4 TWR
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Topics: 501
Posts: 5,450
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501 | 5,450 | ||||
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!
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HP 845 G7 Endpoint
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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!
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Screwed onto the board. Thoughts?
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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!
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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
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ASUS ROG THOR 1200W PLATINUM PSU
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4,183 | 65,246 | ||||
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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!
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Pantum P2502W Toner Reset Chip help
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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!
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2,327 | 27,492 | ||||
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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: 3,912
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224 | 3,912 | ||||
Troubleshooting Game Consoles & Other Weird Devices
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Xbox 360E model:1538 not turning on
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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.
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Badcaps Statistics
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Topics: 102,347
Posts: 1,270,626
Members: 493,600
Active Members: 16,493
Welcome to our newest member, caoyangdediannao.
Latest Topics
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-
by appie1206Hello there friends
Can someone Clear this bios file for me ?
serialnumber: 5CG33778XV
productid: 709Z1AV
Thanks in advance...-
Channel: BIOS Requests ONLY!
05-07-2024, 05:03 AM -
-
by bociubHi There
So I am looking for a part. Namely, a QqEEH. I beleive this is responsible to create the 3.3 power rail, but on my motherboard it is shorted to the ground. injecting 1 volt into the 20 volt power rail the IC heats up. Around the IC almost everything is shorted to the ground,
Anyone knows what this little controller chip supposed to be?
Thanks,...Today, 07:47 AM -
by unimatrix93Dear forum,
I'm stuck with this old TV unit.
PSU: 17PW04-1
MB: 17MB62-1
Symptoms:
- Blue LED constantly blinking when connected to AC.
- Only sigh of life is beeping when touching the capactive buttons on the front.
Diagnostics so far:
Checked the PSU output voltages:
12V present
5V present altought its only around 4.2V
3V is present measured 3.4V.
I check TP 202 which is for the short circuit protection: 0.606V on diode mode
Since I met with some vestel models before with similiar symptoms...05-03-2024, 03:18 AM -
by ResoluteHawkI 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 -
by Ismail-U50Please help me repair my bios file
Dell latitude 7400 2-in-1
Board Number EDB41 LA-G441P Rev:1.0(A00)
Service Tag: FL7ZL13...-
Channel: BIOS Requests ONLY!
Today, 05:53 AM -
-
by AleixpaoloHello, please, could someone help me with my password problem with an asus F15- tuf 506H?
serial number : R1NRCX06Z23205A
full model machine : TUF506HC-HN088
board number : DAONJJMBAGO rev.G
Thanks in advance-
Channel: BIOS Requests ONLY!
Yesterday, 08:02 PM -
-
by krstaHi guys, hope someone could direct me in right way.
So i got the ASUS ROG THOR 1200W PLATINUM for 15€.
The first time i plugged it in wall socket there was no 5VSB present, so i disassembled it took a little peak inside and left it on shelf for a day.
Next day the 5VSB was present and the psu worked the whole day (outside of computer, shorting PS_ON to ground).
I tested it for a few days like than and then installed in my computer, it worked flawlessley for 1 month.(gaming and such for a few hours).
Few days ago i left it torrenting and saw...05-07-2024, 06:46 AM -
by PatanNeed help here...
I'm new on the forum and I'm not professional in electronics so i ask sorry in advance for eventual errors...
As title says, i have a LA-H323P dead.
Now, little background.
The computer was working fine, just seems that the cable of screen was dying because it had the classic color problem, sometimes green, sometimes violet, sometimes perfect, but anyway working.
When i opened it the battery was so fat that was seriously near to explode.
So i removed the battery... and turned on the notebook... that was, again, working perfectly fine....11 Photos04-28-2024, 03:31 AM -
by mist79I am still new to this, so I might sound brainless/ignorant in parts of my description/questions, since I have a lot of gaps in my knowledge, but I will do my best.
The laptop is Lenovo Legion Y540-15IRH, and the motherboard model is NM-C221 Rev 2.0 (Schematics and BoardView can be easily found). To save time I have the exact problem in the laptop as the one shown in this video:
[url]https://www.youtube.com/watch?v=tfucZ_WKpz4[/url]
I was checking the voltages I found that the main power rail V20B+ is good, and same for the +3VALW circut, but when I tried the +5VALW,...Yesterday, 10:52 AM
Tag Cloud
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Trending
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-
by Ismail-U50Please help me repair my bios file
Dell latitude 7400 2-in-1
Board Number EDB41 LA-G441P Rev:1.0(A00)
Service Tag: FL7ZL13...-
Channel: BIOS Requests ONLY!
Today, 05:53 AM -
-
by bociubHi There
So I am looking for a part. Namely, a QqEEH. I beleive this is responsible to create the 3.3 power rail, but on my motherboard it is shorted to the ground. injecting 1 volt into the 20 volt power rail the IC heats up. Around the IC almost everything is shorted to the ground,
Anyone knows what this little controller chip supposed to be?
Thanks,...Today, 07:47 AM -
by ResoluteHawkI 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 -
by ShocK-306HDiHi 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 -
by Ado02Hi,
I'm currently experiencing issues with my Dell Inspiron 5415. Initially, the laptop would sometimes fail to boot, with the keyboard backlight turning on but no display on the screen. After repeated attempts to power it on and off, it would eventually boot up and function normally.
To troubleshoot, I removed both the main battery and the BIOS battery, but now the laptop exhibits a different issue: the fan runs at full speed, but the screen remains blank, and it doesn't boot up.
I suspect there might be a problem with the BIOS, and I would like assistance...-
Channel: BIOS Requests ONLY!
Today, 05:13 AM -
-
by ub6ib969Hi,
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 -
by angelosHi guys,
A few days ago i asked a real hard question regarding plasma tv's but nobody could respond. I need to ask if anyone has replaced this IGBT with another type that actually worked.
The industry is awash with fake chinese knock offs.
I am so frustrated.
Kind Regards
A AnagnostouToday, 04:04 AM -
by mist79I am still new to this, so I might sound brainless/ignorant in parts of my description/questions, since I have a lot of gaps in my knowledge, but I will do my best.
The laptop is Lenovo Legion Y540-15IRH, and the motherboard model is NM-C221 Rev 2.0 (Schematics and BoardView can be easily found). To save time I have the exact problem in the laptop as the one shown in this video:
[url]https://www.youtube.com/watch?v=tfucZ_WKpz4[/url]
I was checking the voltages I found that the main power rail V20B+ is good, and same for the +3VALW circut, but when I tried the +5VALW,...Yesterday, 10:52 AM -
by AwsanHello everyone, Due to a bad bios flash this Omen has a weird issue.
In the BIOS it says the ME version is 0.0.0.0 and when I try to update the BIOS it writes the bios region but when it reaches the firmware and ME it says it failed.
Tried HP USB recovery way and nothing worked.
I am kinda stuck, the main problem right now is the laptop would boot within 5 mins until the ME drivers load in windows and all works normally....2 Photos-
Channel: BIOS Requests ONLY!
Today, 03:02 AM -