I fried a Lenovo Legion 5 Pro with a Display swap?

Dearex · May 8

Hi together!

My brother bought a Lenovo Legion 5 Pro with a broken screen and ordered a replacement one. I offered to swap the Displays as I have done it on other Laptops already. I've replaced the broken one without too much trouble, except the black tape stuff on the bottom of the old display ripped apart while removing the bezel. With a lack of these flat adhesive things I just connected the display and the battery and booted up the Laptop. Display looked bright and colorful, but the brightness couldn't be adjusted. Windows shows the changing slider but the display stays the same. I wanted to test if this came from the display or the laptop so I powered it down again and swapped back to the old one. I didn't expect any problems as the display worked fine before (except 3/4 unreadable because broken). I tried to power it on but after a few seconds there was a crackling noise and the laptop shut off without ever displaying anything. I attached the new display again but it doesn't boot anymore. The RGB keyboard turns on for about 30 seconds and then the Laptop goes out again. Also no output on an external Monitor, the display also doesn't even light up in black. Only thing to signal some life is the power button and the keyboard.

The only thing I can think of is the ripped tape with some of its copper parts caused a shortage on this blue little thing under the display (no idea what this is).

Any idea what went wrong or something I could try? Is frying a mainboard really that easy? Thanks for anything