Bad mac

I recently acquired a nice MacBook Pro. It's a 2009 15" 3.06 processor.
The problem is:
Wont' boot at startup
There is no chime
Screen remains black
black sleep light
Fans come on slow then speed up
Tried:
smc reset etc.
removed battery and started computer, same result
changed ram
Removed logic board and found only dust, no signs of liquid damage
Any other ideas

via ehMac.ca http://ift.tt/1rzfaOD