Lenovo Y50-70 Completely dead, no lights at all.

[didutgendut]

Re: Lenovo Y50-70 Completely dead, no lights at all.

Oh man, i screwed up again. after few minutes charging the battery PU1103 seems blown up.
1. Is it beacuse i plug the ac adapter without the ceramic caps on the board?
2. i should remove PU1103 and check for the short again right?

[piernov]

Re: Lenovo Y50-70 Completely dead, no lights at all.

I don't think the absence of the ceramic capacitor would cause this issue.
However PU1102/PU1103 should not turn on when charging the battery only (computer off). If PU1103 did blow up when the computer was off, most likely you got a short somewhere around PU1102 (either it was bad or you didn't solder it back correctly).

[didutgendut]

Re: Lenovo Y50-70 Completely dead, no lights at all.

okay so now im gonna replace those PU1102, PU1103 and the ceramic caps with the new one
wish me luck..

[didutgendut]

Re: Lenovo Y50-70 Completely dead, no lights at all.

so now after replacing all off those bad things the laptop turn on now but with a dead screen.. when i press the power button the keyboard backlight is on and the fan spin for a while and stop and it shows nothing on the screen. i already double checked the display connection to the board, and everything seems to be ok. what do i need to do now ?