Casio CZ/ VZ/ FZ - Pro Series

Casio CZ 5000 1985
No function,LEDs or LCD display
The only convenient 0V point for the TTL I could 
find was the -ve pin of the ps bridge rectifier. 
No 5V for the TTL. It looks as though the keyboard had been 
dropped as the large electrolytic on the ps had moved and 
consequently the track continuity to the 5V regulator part of 
the ps was broken under the capacitor pin,not obvious at al.
With all 3 connectors unplugged and PA order on main pcb 
not the ps end which is different order.
PA 0,15.3,-16,0,5.6,0,5.2,0,5.2
PC 0,0.03,5.2
PD 0,16,15.3,0,0

I found the above on a website...it sounds almost identical to my 
problem...can anyone spell it out a bit more as to where i should be 
looking for this capacitor pin..as i am no expert in these maters. 
Any help would lift my day.thanks.....
*NK