Laptop screen shortening the laptop motherboard

[Will19931]

Hi there, basically I'm in a process of fixing my gigabyte aero 15, and I encountered a really weird problem, which is when I plug the EDP screen cable to the screen it shorts the whole motherboard, basically no volts, nothing, if you press the power button nothing happens, but when you unplug the screen it works like nothing happened, just to mention I'm not sure about the state of the screen, probably needs a replacement, but I just wanted to know before I replace with a new screen, if it's possible for a screen to short the entire motherboard, or is actually the main chip protecting the motherboard from damage, and also instead of the screen could be possible the edp cable be the responsible for this issue?
thanks and stay safe everyone.

[piernov]

Re: Laptop screen shortening the laptop motherboard

The backlight of the display can cause that, so measure the resistance to ground on the backlight pins of the LCD connector. Both on the LCD itself (LCD cable disconnected) or on the motherboard's connector with LCD plugged (and compare with LCD unplugged) in if possible, so that you confirm if the issue is with the LCD or with the cable.

[Will19931]

Re: Laptop screen shortening the laptop motherboard

Hi there, sorry for the late reply, hope everything is okay, so I measured with the laptop off and on and on the cable i had only 19v not 3v, but on the actually connector i got the both signals, anyway i bought a new screen and it still doing the same thing , which seems to be an issue with the cable