Ok, testing power test points on the power board, I come up with two wrong, voltages, and and not sure where to check from there . TP1 gets .17 should be 5+, TP2 is -4.40, should be -5 TP3 is 15.21 and TP4 is 11.97 which should be 12.
Everything sounds good to me except TP1. I can't see in the pic, what is at TP1? Is it a capacitor?
And what is the location ID of the cap in the lower left corner that is the right side one of the silver pair of caps? It looks shot to me.
Also, did you pull the fuses and check them to make sure they are all good? You should use a Digital Multimeter to check them, don't just eyeball them.