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GDS70 LA-K472P DELL ALIENWARE X17 R1
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ncp81208 datasheet
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opto something Liteon 816A4
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DA00PDMB8E0 Rev:E schematic and boardview
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LG 43UJ701 (EAX67166104) kapanıp açılıyor,
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Welder not turning on - Learning
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Galaxy Buds FE SM-R400
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BOSCH Microwave CFA634 error E1006
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Equipment Usage, Soldering, Techniques, and Reviews
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Badcaps Statistics
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Topics: 102,693
Posts: 1,274,383
Members: 496,187
Active Members: 17,154
Welcome to our newest member, Thunder Vincent.
Latest Topics
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by max2711Hi
i need schematic for Samsung BN44-00757a power board.
TV model: UE48H5003
Thank YouToday, 11:27 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...05-08-2024, 01:30 PM -
Hey all
I have a set of FE buds, the right side will not connect, I don’t believe it is even charging..I am able to connect and get audio through the left, the case appears to charge itself and the left correctly.
The left has ~1.3v between the pins, the right side has ~-0.7v ..
This is wonky, surely? My assumption would at least be the same charging voltage, even if the..
can someone confirm that the earbuds polarity is different?
I may try and inject 1.3v onto the charging pads of the right, if it will take even a little charge...-
Channel: Troubleshooting Audio Equipment
Today, 11:13 AM -
-
by FrozenHaxorHey, I'm repairing a board from liquid damaged laptop, managed to get 5V and 3.3V rails up, some passives were corroded away. Only problem right now is no reaction to power button, there is no PCH_PWR_EN signal, DPWROK_EC is 2.5V, +1.0VALW is missing. Replaced KBC with brand new one, reprogrammed. No change. Any ideas? Schematic and boardview are available, attached them at the bottom. Boardview file can be opened by "BoardViewer" software.
Please don't mind the damage near UC4, it was caused by liquid damage and there is battery connector on the other side,...2 PhotosToday, 11:10 AM -
by ianbakHi,
I have an HP 255 G8 that runs for as long as its battery holds charge but won't accept AC power.
I have partially diagnosed the problem and the issue seems to be that there is no ACDRV output from the BQ24735 to turn on the two input MOSFETs. The 24735 has a VCC of 19.57 V, the ACDET input is at 2.93 V and the REGN 6V LDO is outputting 5.98 V, so everything looks good - but ACDRV is stuck at 28 mV.
I've already replaced the 24735 and both input MOSFETs and nothing has changed.
I'd appreciate some suiggestions as to what to try next.05-20-2024, 08:45 AM -
by DemonhillHello guys yesterday i opened a post to request the help in removing password from this laptop but i don't know why my postit's now removed. I don't think to broke the rules but maybe the link for the dump was the problem. Anyway i opened again the request hoping that someone can help and that im not doing anything wrong. Thanks
-
Channel: BIOS Requests ONLY!
Yesterday, 01:11 AM -
-
GOOD DAY,
I NEED HELP SOMEONE KNOWS WHAT CHARGING IC HANDLES THIS BOARD, IT IS FROM A LENOVO S410P, BUT I REMOVED THE INTEGRATED ONE AND IT IS IN VERY BAD CONDITION YOU CAN'T SEE THE LETTERS.
IT'S A "BQ"...Yesterday, 11:44 AM -
Well hi to all
The big question: Is there any hope?😎
I think about 36 hours ago I begin my journey to find a solution for my pc model with no luck.
BCU: Access denied
Efi Shell: Hp Protocol Something etc..
I am not that experience, "but I can fight my way through"
What to do guys?
To be or not to be is not the question anymore.Today, 10:02 AM -
by mo000hi
i have dell 15 3576 i7 8th comes with weird issue
the laptop each random period maybe after 1 or 2 weeks not power on unless remove the cmos battery and reset the bios
i try update the bios but the same issue
what is the reason ?
is something about RTC circuit ?
any idea before i start the diagnostic .Yesterday, 04:20 AM
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-
Well hi to all
The big question: Is there any hope?😎
I think about 36 hours ago I begin my journey to find a solution for my pc model with no luck.
BCU: Access denied
Efi Shell: Hp Protocol Something etc..
I am not that experience, "but I can fight my way through"
What to do guys?
To be or not to be is not the question anymore.Today, 10:02 AM -
by TehzeebI need ds-7104hghi-k1 80388 firmware
my attached bios is password protectedToday, 08:42 AM -
by sewsulleGood afternoon,
I'd appreciate help diagnosing my A2442 that's only taking 5v and 0a
This was my personal laptop and I had closed it at the end of a class and opened it in the next class when it just didn't wake up from sleep (The battery was charged). I connected a charger later that night and it booted right up but touch ID stopped working. The next day it did the same thing but never turned back on when I plugged in a charger.
I though the touch ID issue was weird but I'm not sure if that info helps.
When this happened months ago I tried to diagnose...Yesterday, 07:56 PM -
by neo2010Hello,
I accidentally flashed the wrong firmware to my Lenovo Laptop Touchscreen. Now it is not recognized anymore in Windows 10. With Linux, I get the Device Listed as ELAN 04f3:000b USB device. I have modified the original Lenovo Flash Tool and tried other Firmware bin files but without success.
The screen is the WHQD version. Can anyone provide a firmware bin file to reflash the touchscreen controller? As it seems that the controller is in recovery mode.
Thanks in advance-
Channel: BIOS Requests ONLY!
Today, 08:04 AM -
-
by max2711Hi
i need schematic for Samsung BN44-00757a power board.
TV model: UE48H5003
Thank YouToday, 11:27 AM -
Hey all
I have a set of FE buds, the right side will not connect, I don’t believe it is even charging..I am able to connect and get audio through the left, the case appears to charge itself and the left correctly.
The left has ~1.3v between the pins, the right side has ~-0.7v ..
This is wonky, surely? My assumption would at least be the same charging voltage, even if the..
can someone confirm that the earbuds polarity is different?
I may try and inject 1.3v onto the charging pads of the right, if it will take even a little charge...-
Channel: Troubleshooting Audio Equipment
Today, 11:13 AM -
-
by FrozenHaxorHey, I'm repairing a board from liquid damaged laptop, managed to get 5V and 3.3V rails up, some passives were corroded away. Only problem right now is no reaction to power button, there is no PCH_PWR_EN signal, DPWROK_EC is 2.5V, +1.0VALW is missing. Replaced KBC with brand new one, reprogrammed. No change. Any ideas? Schematic and boardview are available, attached them at the bottom. Boardview file can be opened by "BoardViewer" software.
Please don't mind the damage near UC4, it was caused by liquid damage and there is battery connector on the other side,...2 PhotosToday, 11:10 AM -
by totto210Hi guys, well the summary is this:
the equipment arrived because it did not turn on (it had been the original 230w source the problem) then I feed with my regulated source and without wanting to invert the poles. the equipment turned on and turned off.
This damaged the charger and its mosfets both high and low switching.
It also damaged the input mosfet (pq102).
by chance i had another lenovo legion just like this one and i removed the components and tried to turn it on and it turned on but ....... it burned again the high and low mosfets and switch (pq104, pq105, pq103)....Today, 10:03 AM -
by hamzafoxmotherboard code KV481/KV581/ NM-F051 Rev 1.0
cpu R5 7000 SERİES
S/N.PF4K7WNG
[B]There is no backup[/B]motherboard code KV481/KV581/ NM-F051 Rev 1.0
cpu R5 7000 SERİES
S/N.PF4K7WNG
[B]There is no backup[/B]motherboard code KV481/KV581/ NM-F051 Rev 1.0
cpu R5 7000 SERİES
S/N.PF4K7WNG
[B]There is no backup[/B]-
Channel: BIOS Requests ONLY!
Today, 09:43 AM -
-
by farouk_1994Hello please need bios unlock for hp elitbook 845 G10
Sn:5CG41056NC...-
Channel: BIOS Requests ONLY!
Today, 07:06 AM -