Acer 5535/5235 black screen of death

[Hlias Anton]

hello recently i got a friend's acer 5535/5235 to repair it. the laptop power up but it doesnt send signal on the monitor, it remains black.
i tried to clean it, i replaced the thermal paste on the gpu - cpu, removed rams hdd, changed bios battery but still the same.
After many tries to boot it, it opens 2-3 times, it booted on windows, the cpu gpu temps was around 50C.
Any idea what may be the problem? its the gpu fraud? i am thinking to reflow gpu since i cant think something else to do.

 

[DiegoD]

Has the laptop been physically damaged in any way? Even if it hasn't it could just be a faulty screen or screen cable. Luckily this theory can easily be tested. Plug the laptop into a monitor or tv and see if a picture comes up. If it doesn't then you most likely have a faulty GPU or mobo, if it does, a faulty screen.

Screen are easy to change out for the most part and shouldn't cost too much more than $100.

 

[Hlias Anton]

hi sry for the late answer, the monitor should be fine, since i dont get a screen even with an external monitor, so i dont think so that the problem could be a faulty cable. i tried a reflow today but it didnt solve anything, but i didnt have the right tools to do it correctly.
i am thinking that the gpu should be the problem, since i logged on windows 2-3 times. but now after many tries i just hear the cooler to spin, after some minutes it send out hot air, i get green lights but i dont get any signal.

do you think so that with the right tools, if i try a reflow again, it should solve the problem, at least for a short of time? or it doesnt worth the try?

 

[DiegoD]

I'm am not comfortable enough with reflow ingredients to give you any advice on it. You may want to ask around to see if you can get tips on the procedure and see if it is even worth it.

Nevertheless, I found this forum page on reflowing.
http/www.tomsguide.com/forum/56202-35-what-reflow-laptop-repair

I'm not sure if it will help you but it's the most l can do on that subject. Best of luck!