Clearly you have a hardware problem. This capacitor could fail for one of the following reasons:
1) Random failure
2) Installed backwards
3) Over-voltage.
Either way, it is connected across the main power supply and may have caused damage. Not possible to say from a distance. You could check for the following voltages:
1) about 20V (rough) across the replaced cap.
2) 5V at TP1507
3) 8V across C1520
4) 15V across C1514
If these are not all there there is a big problem. Either way, it may need to come in for sevice.
