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Tuesday 6 March 2018 at 13:28
Quoted from zaza:That would only happen when testpoint TP8 on the powerdriver is very high or 5volt too low (or LED is broken).
Maybe there is a connection between the circuit braker tripping and a high TP8.
Measure all testpoints on the powerdriver.
Check setting of transformer (3x3 plug) and main...
Source: http://pinside.com/pinball/forum/topic/terminator-2-no-boot#post-4265608