All of sudden my Star Trek Premium decided that coils were not useful after all for playing pinball. Needless to say, I kind of disagree
Anyway, checked the fuse : all are correct
F5 especially is good, but the status led just above does not turn on (L17)
Measuring 50V, I get a 21V, which kind of explains why the coils don't work, but don't explain why it's at this level
Manual I have is useless, as it does not include the power board schematics, so can't figure out where to probe.
I'm assuming 50V DC is generated through a rectifier from the 48V AC input, but which is the correct rectifier ?
21V DC seems like half of the rectifier is dead, resulting into an average DC current of 21V (since it's missing half the phase)
(edit) I found a power board schematics on Shrek manual. Based on this, this should be BR1
Oddly enough L17 is an indicator of 48v AC, through two diodes. Only way it can be off if 48VAC is present is iff the two diodes are dead... Which would seem rather odd (two diodes, AND BR01 seems like a stretch to me, but after all maybe there's been a power surge)