820-2530 no picture no chime power up no problem

lukazmac

New member
Hi. I have strange situation here. I had water damaged macbook with i manage to bring back to power up. Its had back light fuse bloow, lcd connector broken and no green light on charger. I fix all of them but when i realise i dont have red light on charger so i decide to replace u7000 to fix charging problem . So i did replaced and laptop start charging but now i dont have anything on screen.
Never had that strange problem.
lcd connector is definitly soldered correct and also i replaced lcd cable because was broken from water. So now no picture. Replaced few memory ram but nothing. No even any sound of life but fan spinning and charging battery ok:
PPVCORE_S0_CPU - 1.16v

voltage on back light fuse f9800 pin 1 and 2 is 12.52v
any idea? i dont think gpu just die on me :p
 

dukefawks

Administrator
Could be anything. Probably something else still corroded and has nothing to do with the U7000 replacement. As you have a Vcore of 1.15V it means all power is ok and the CPU is just not starting. It could be anything. Go back and check all the corroded areas, crap under the SMC is common.
 
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