LCD with Grey Screen, 3 Horizontal Grey bars, but TV output works
My black 2.2 Macbook Core 2 Duo A1181, 4Gb Ram 10.7.4
is working perfectly except the video display shows 3 bars of equal height shades of gray.
The external monitor works perfectly and shows all functions of the comptuer are fine.
History: Computer was working perfectly until it had problems recognizing and not charging the battery.
Pulling the magsafe would put the laptop to sleep.
Resetting the SMC and PRAM would only help temporarily. (SMC did the trick actually) Took to Apple.
They took it and then said they would charge me $755 because they found evidence of liquid Damage.
I declined and took the machine back.
When they gave it back, LCD screen was as above.
I told Apple that they should at the very least give me back the computer as they had recieved it. But they argued that the liquid damage was going to cause problems eventually anyway. I do not agree with them that the LCD was about to have problems. It always worked fine.
I did not check the external monitor at the time but hard drive was booting up (whirring and clicks)
Completely disassembled and cleaned computer and logic board (overnight soak and clean, 2 day dryout for board.)
Reassembled with care and thermal paste.
(not a technician but not really a novice either)
LCD screen still bad but battery problem completely gone :)
Read some info here and decided to test external monitor. It worked fine.
Because the backlight works, I am imagining that it is the data getting to the LCD that might be the problem.
Really appreciate any suggestions.