Hi everyone,

I've got a little "problem child": my Dell Latitude 7420 2-in-1, which had a faulty mainboard.
I replaced it, but ever since, the touchscreen no longer works — and honestly, I’m running out of ideas…

In Windows Device Manager, I just see an I2C HID Device with error code 10. Sporadically, the touchscreen is recognized correctly for just a few seconds, but I haven’t been able to determine under which circumstances this happens.

The touchscreen also doesn’t work in UEFI/BIOS, although it’s enabled...

Hello,
I have an old MASTER TL-240 LED TV. Since it stopped working and it had a DVB-T receiver that is being dismissed in Italy, I've decided to replace the mainboard with a DVB-T2 one.
The original problem was that when switching on the TV, the power LED was transitioning from red to steady blue, without showing video or audio.
After checking some voltages on the power supply board (HKL-240101-B Rev. 1.4, HKL from now on) someone suggested me to replace the mainboard.
Now I have some doubts about how to connect the new mainboard to the old power supply.
First of...

Hi,

recently I went ahead and tried to tackle a repair I was putting off due to no experience and proper tools. It's a Lenovo G700 mainboard from a totaled chassis (previous owner banged it with a hammer, luckily the mainboard was mostly unscathed).

I had to remove the two CPU VRM caps since they were damaged. Otherwise there wasn't any more visible damage apart from the NB having a small chip on the edge closest to the biggest dot).

Powered it on and there was a barely noticeable squealing sound coming from the board (exact arena is unknown, but I think...

Hello all,

I am attempting to convert an 86-inch commercial display, manufactured by TPV, back into a standard, fully functional TV/monitor. The display is currently running corporate/embedded firmware that prevents standard operation.

The primary goal is to find the original or a compatible "public" (non-corporate) firmware file to flash the mainboard and restore normal HDMI input functionality. 1. Display Identification & Hardware Details

• Suspected Origin: TPV / Philips Professional Q-Line or P-Line series.
• Panel HWID (from Windows): MONITOR\MGF86

...

Hi everyone,
I'm trying to repair my LG 49UB850V TV (WebOS 1.0, UHD model from 2014).
Mainboard model: EAX65684604
PCB marking: EBT62954607
SPI chip: Winbond W25X20CLNIG Problem description:


Originally, the TV would turn on (backlight and LED OK if I force them on), but it shut down as soon as any input was received from the IR sensor or remote. The backlight and power board were working fine.

After testing and verifying the voltages (DRY ON, PWR ON, 12V/24V rails), I suspected a corrupted SPI firmware. What I tried so far:

• I bought another

...