hello lads i got lcd 32- 56 with a kb-3151c power supply and cv306h-x mainboard when you tun on stanby light goes green but nothing on screen doesnt even flash backlight to i checked all power supply output for mainboard 5 v there but 12 v not there no backlight 24 v there i think mainboard not switching probly maybe eprom fault or mainboard totaly gone any idea lads cheers
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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
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Hello! I have a problem with a mainboard from a Lenovo Ideapad 3 15ada05.
The problem is that the cooling fan is always on full speed, It doesn't recognize the battery and it is not charging it and the keyboard has only partial functionality, many of the keys don't work.
I tried a new bios update but that didn't changed anything.
What could be the problem with it? -
I have an LG Plasma TV 60PM6700 for the past ~12 years.
In the last ~3-4 months I have been having some issues.- Problem: It started with random picture disappearing (sound still worked).
Frequency: Happened about once a week.
Solution: Had to turn off TV wait a few seconds before turning it on again. - Problem: Then it got worse and the TV started to shut down and when turning on the no picture just sound.
Frequency: Happened about once a week.
Solution: Had to turn off TV wait about 10-20 seconds and turn it on again to solve. - Problem: TV shuts down
- Problem: It started with random picture disappearing (sound still worked).
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Hi, i have a Problem with my Dell Inspiron 7520 LA-8241P Mainboard.
When i start it, all LED's turns on but the display is black.
Shortly after starting I noticed a click on the mainboard but don't know where it came from.
I have tested it with the i5 and after the click the laptop goes off but with the i7 the laptop stays on after the click
.
The Dell Inspiron 7520 supports the i7
What I've already done:
- start without RAM and it beeps 2 times
- start without bios battery and it beeps 5 times
- Press D on start,... -
i have a problem with thinkpad X1 carbon gen 2 "LMQ-1MB 12298-2 48.4LY26.021"
The laptop was turned off because the MOSFET was not transmitting voltage. After checking it turned out that the gate pin on the MOSFET was the problem, because it was producing an inappropriate voltage. and it was discovered that the problem was with the Think engine, so I decided to reprint each pin, and finally the mosfet could work properly. However, there is another problem, even though the voltage has been supplied to the laptop, it still won't turn on, there isn't even an LED indicator. After double...
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