Component level repairs on macbook -pro -air ect

is there anyone who is doing component level repairs , i stuck with problem on macbook pro that laptop is turning on no screen no startup sound .. screen still dead ! i did reboling winth new chip but still same .. any ideas ?

QUOTE=MacGuys;1351167]is there anyone who is doing component level repairs , i stuck with problem on macbook pro that laptop is turning on no screen no startup sound .. screen still dead ! i did reboling winth new chip but still same .. any ideas ?[/QUOTE]

You could try...Powerbookmedic.com

But they may still just want to do "part swaps" (replace bad parts with working parts)...rather than repairing a "bad part". It's just too difficult, time consuming, and expensive to repair & diagnose "bad parts". If there's like on capacitor or resistor that's bad...these are very very (of not impossible) to replace.

- Nick

p.s. What the heck "new chip" did you use? There usually is no way to replace the "chip" without simply using another logic board. If by "chip" you mean the cpu.

Hi Piggo3
i did replace nVidia GPU chip using reballing system , then ISL 9405 power IC chip
however still dead screen