Screen is blinking non stop

Hi Dan,

thank you for the reply.

MagSafe is green and battery checker shows all green.

I just removed the dust with my hands, the ones that were visible, no brushes and no vacuum or air. Should I do that?

What I see is that when I leave the mac off, after it cools down I turn on and the screen is not blinking, after some minutes it starts, and also while is is cold it is blinking a little, after I put the login and it loads the UI than it blinks intermittently.

thanks again Dan

@Augusto Arnold - Don't use a vacuum! Get a can of Can'ed air, use a soft paint brush to lightly scrub the logic board surfaces after taking it out following this guide: MacBook Pro 17" Unibody Logic Board Replacement make sure you follow proper ESD practices. I would clean off the old thermal paste and apply a fresh coat on both the CPU & GPU chips. Its important to not let the fresh thermal paste go past the black silicon chip its self! You don't want to covering anything on the green chip base, a little goes a long way! Fully clean the heat sink of any dust buildup as well.

Hopefully we can get this going again.

Thanks a lot Dan,

I will do what you said, to me seems that there is something with temperature of the GPU, as it starts ok when cold. I will try to find some instructions online on how to apply the thermal paste correctly.

Cheers!

Augusto

@Augusto Arnold - Give this a read How to Apply Thermal Paste