It may help if you wish to see if there is anything obvious such as a loose video cable connection etc on the motherboard Unfortunately it doesn't show how to dis-assemble the lid to view the screen end.Īs I cannot find a service manual online, without a schematic diagram it will be difficult to ascertain where exactly the problem is. Here is a link to a webpage that shows how to dis-assemble the laptop. When the screen dims have you tried pressing Fn + F6 together to see if you can increase the brightness at all?(Fn + F5 dims the screen) Just wondering if it could perhaps also be a problem with the software control of the backlighting.
If you can still 'see' the display when the screen goes black it indicates that there is a problem with either the voltage level of the power supply to the backlighting going intermittently faulty or that somehow the connections supplying the power are going more resistive (as best as I can determine the power from the backlighting is supplied from the motherboard and not a separate inverter board in the laptop).
