Answer to: Is it really the inverter board?Hi I have the Core Duo (2006 in Black) and had a similar problem, although I did have a bit more life in my screen than you. I replaced the inverter and it made no difference. I eventually fixed it by simply unplugging the inverter cable from the logic board and re-inserting it. I also but a small square of gaffer tape over the foam square which is stuck to the topcase and appears to be there solely to put pressure on the inverter cable connector. It has been working fine since, and doesn't flicker at ANY screen brightness, which is an improvement on new. I have heard of others fixing the problem by replacing the cable that runs from the logic board to the inverter too.