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Saturday 21 April 2018 at 08:29
Quoted from oneperson:Took voltage readings at the wires that run to the 2N6059 transistor
B 13.5
This is your problem, should be @ 6.5 volts. So the regulator chip is not applying any control voltage to Q-5. With no control Q-5 will pass unreg voltage straight thru - a pn junction drop.
Source: http://pinside.com/pinball/forum/topic/1986-sys-11-high-speed-5-volts-is-125v#post-4352610