Backlight Issue - Not Inverter, Cable, or Logic Board
I have been trying to fix an issue with the backlight on my friends A1181 laptop. When the problem began, the backlight would occasionally cut out. This got worse over time and seemed to be related to screen movement. Turning brightness down then back up would remedy the problem for a short time.
After doing some research, I decided to replace the inverter cable. This did not help, so I went ahead and replaced the inverter itself. Today I installed the new inverter but still the same issue! I can get it to stay on for sometimes about 30 seconds (if that) by moving the screen around a bit.
I have checked the voltage supplied to the inverter and get 3.2, 5.0, 0.0 and 12.3 on the four conductors (as expected, i believe?).
So, what does this leave? Could it be that the backlight tube itself need to be replaced? Any other ideas for a fix?
Thanks for your help!
Is this a good question?