Hello, I have a question about electricity. Suppose I'm well insulated from ground and neutral, and the live wire of mains comes in touch with a wound in my finger, will this potential interfere with body voltages, hearth for example, or it will only go to its circuit return path ?
Thanks!
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LG 43UJ701 (EAX67166104) kapanıp açılıyor,
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Latest Topics
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by matkToday, 02:12 PM
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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 OmronHello Guys! I have trouble with my car radio Kenwood KDC 3051G I hope someone more knowledgeable can help me, I tried everything in my power that I stumbled upon online.
My radio is permanently in demo mode, it says Press Volume Knot Cancel Demo and when I press it nothing happens.
- Tried to unplug radio and plug it back in into power,
- Tried to reset radio by holding reset button key for 5,10,30 seconds while in power and without power, plugging it back in, it wouldn't work.
- Tried to hold 3,6 while turning it back on and then pressing 1,2...-
Channel: Troubleshooting Audio Equipment
Today, 01:27 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 m4a2t0tI can see the image in the background with a flashlight. I have 260V on LED+ and 90V on LED -. The backlights were acting weird with my tester so I pulled the panel and one LED does take about 2 seconds before it lights up but thats it. Is the voltage at the LED connector correct?...05-11-2024, 08:25 PM
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by Luís AmaralHello guys, i am working on a X512FF motherboard that comes dead, 19V stops on first mosfet, Gate only have 3v... if a make a bypass laptops works great with no problem... already tested the 5 mosfets, if i remove the current sensor PRS8901, the 19v appear...
Something with the 19V line and the charger detects and stop working !
Any advices ?...05-09-2024, 08:30 AM -
I bought a T12-958 recently with an M8 handle and until now it has worked very well. The tip wasn't earthed but that was easily resolved.
Now, whenever it is switched on, it heats up to about 70*C then shows an [INVER] error on the screen and stops. In order to fix it I have to either unplug and re-plug the handle, or unplug and re-insert the tip from the handle. While doing that it changes to [ERROR], then it finishes heating up and works perfectly. Until it's turned off, after which it will show [INVER] again next time it is turned on.
Any idea what the problem is?05-06-2024, 01:36 PM -
by chh0596Need schematic or board view
GDS70 LA-K472P DELL ALIENWARE X17 R1
thank-
Channel: Schematic Requests ONLY!
Yesterday, 05:53 AM -
-
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
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-
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 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 TehzeebI need ds-7104hghi-k1 80388 firmware
my attached bios is password protectedToday, 08:42 AM -
by matkHello, I have a question about electricity. Suppose I'm well insulated from ground and neutral, and the live wire of mains comes in touch with a wound in my finger, will this potential interfere with body voltages, hearth for example, or it will only go to its circuit return path ?
Thanks!Today, 02:12 PM -
by OmronHello Guys! I have trouble with my car radio Kenwood KDC 3051G I hope someone more knowledgeable can help me, I tried everything in my power that I stumbled upon online.
My radio is permanently in demo mode, it says Press Volume Knot Cancel Demo and when I press it nothing happens.
- Tried to unplug radio and plug it back in into power,
- Tried to reset radio by holding reset button key for 5,10,30 seconds while in power and without power, plugging it back in, it wouldn't work.
- Tried to hold 3,6 while turning it back on and then pressing 1,2...-
Channel: Troubleshooting Audio Equipment
Today, 01:27 PM -
-
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 Maxpower3Hello everyone.
Here is the bypass solution for several Lenovo ECs.
This has worked on many ECs.
Only works if password is contained in EC
I succeeded on many models
[URL="https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/104872-lenovo-l15-gen-2-ryzen-password-removal-w-vertyanov-successor?p=3217086#post3217086"]https://www.badcaps.net/forum/troubl...86#post3217086[/URL]
[URL="https://www.youtube.com/channel/UCeF58jC2Bt_adKcguvynjeA"]https://www.youtube.com/channel/UCeF...t_adKcguvynjeA[/URL]...-
Channel: BIOS Requests ONLY!
03-17-2024, 11:57 AM -
-
Hi everyone!
Hope you're all having a great day, and thank you very much for stopping by and taking the time to read this post to help me with my parents' Samsung TV.
My issue: No backlight.
Model: QE82Q70RAT
Type No: QE82Q70RAT
The TV was already serviced by Samsung once under warranty for the exact same issue, but six months after the fix, the backlight went out again. Now, Samsung is asking for nearly the same price as a brand new TV to fix this with the same 6-month guarantee.
So hopefully, I can fix this cheaper.
...Yesterday, 06:56 AM -
by max2711Hi
i need schematic for Samsung BN44-00757a power board.
TV model: UE48H5003
Thank YouToday, 11:27 AM