Update
Updating database... Please wait.
Saturday 6 January 2018 at 21:19
Quoted from amkoepfer:79-82v
This says your transformer is fine but your 60V regulator is not working.
60V +/- 10% is OK but this is way too high.
What do you measure at E1 and E2?
The 60V regulator is comprised of:
R1 -- 1.3K, 5W
CR5 (if replacing, use 1N5372B)
Q1 -- TIP31C
Plus 60V current regula...
Source: http://pinside.com/pinball/forum/topic/gottlieb-system-80-power-board#post-4161769