White a1181 Macbook Dead. No signs of life!

[BusyApe]

I have a 2009 white macbook that all of a sudden decided to die on me. I originally bought the macbook as a parts computer on ebay, the seller sad he didn't know what was wrong in it . I replaced the ram and it worked like a charm. Then one day ,about 3 months later, it won't power on at all. I'm the only user and there wasn't any spills or misuse. One day the laptop powered off and it never powered on again. The charger indicator lights up green and amber when the battery is in , if that makes a difference. I've tried several resets, pram,smc, to no avail. I have 2 more of these macbooks lying around so I tried different keyboards that I know that work. I opened it up and the internals look normal to me. I'll attach a picture later. I'm at my wits end with this thing so I decided I would ask for suggestions here before I toss it . Any recommendations ?