I've got a Sony Vaio PCG-GRX670 laptop and I've been having problems with the power connector (at the motherboard) for some time. The cord is fine as I have checked it with a volt meter, and it will work "sometimes" if I wiggle the cord just right, but that no longer works. I have read that this happens to a lot of Vaios but no one has a solution besides sending it to Sony to get it fixed. Has anyone experienced this? Any suggestions?