ALB-Repairs
Member
I have an 820-3437 doing some bizarre things.
Backlight no display, pulled all peripherals without change, Tested with a known good display.
It sometimes shows backlight no display, and other times, it Chimes over and over again, Each time it chimes, the chime becomes more and more distorted.
The board has the dreaded white apple sticker on it suggesting its a refurbished board, It looks like it had liquid damage at some point, but the board has definitely been cleaned.
Tried reprogrammed U6100, reflown SMC, replaced Lp8550, but its made no odds, im thinking the PCH or CPU is dead? anyone seen this fault before?
Thanks
Backlight no display, pulled all peripherals without change, Tested with a known good display.
It sometimes shows backlight no display, and other times, it Chimes over and over again, Each time it chimes, the chime becomes more and more distorted.
The board has the dreaded white apple sticker on it suggesting its a refurbished board, It looks like it had liquid damage at some point, but the board has definitely been cleaned.
Tried reprogrammed U6100, reflown SMC, replaced Lp8550, but its made no odds, im thinking the PCH or CPU is dead? anyone seen this fault before?
Thanks