Question : Problem: VGN-S46SP sony notebook cannot power up

Hi,

I have a sony VGN-S46GP notebook. When I press the power button, it refuses to power up. No sound. No light. Nothing.

I am very sure that:
- My notebook battery is in good working condition. I tried the battery on another sony notebook.
- My AC adaptor is working too.
- There is current on my motherboard when the power supply is available. ( does it mean it is still in good condition?)

I've browsed a dozen of websites related to sony notebook repair but I cannot determine the cause of my problem.

I suspect the tiny cable connecting the power button to the motherboard is spoilt but i have no way to test it out.

Pls advise.

Answer : Problem: VGN-S46SP sony notebook cannot power up

Sorry here is the link to the service manual
http://home.comcast.net/~nw_systems/vgnS.pdf