Lenovo Gaming 3 15ARH05 NM-D191 black screen

[rares01]

hi i have this laptop main is gy535/gy536 nm-d191 rev 1.0 powers up but black screen tryed ram resset button resset , also conected an external monitor and nothing happens.
i also write the bios chip with working dump, and the same.
it also powers on when i press the f9 key. but also with black screen
someone have a ideea what to do next?
i also removed the hard drive wifi card .

[mcplslg123]

Re: Lenovo Gaming 3 15ARH05 NM-D191 black screen

Do you expect us to suggest anything without any measurements??

[rares01]

Re: Lenovo Gaming 3 15ARH05 NM-D191 black screen

i thought someone know this problem its more and more common on this version. , its same like our mate in this topic https://www.badcaps.net/forum/showthread.php?t=73773, but he dont answered about the result.
the 3.3 and 5v are good and present.
i think its a question of a force resset. but on this model didnt work the usual resset methods.