Check the fuse on the primary (line) side of the transformer and make
sure it is the factory recommended value.
Check that the 6.3 light wiring isn't over fused and shorted! It may not
be connected through the power supply regulator board.
If above is all good, then see if the transformer windings are loose
(unplug the game, eh?) if you grasp the paper wrapping and try to wiggle
it. It should feel rigid. If loose try putting some hardwood wedges in
space between the windings and the metal core of the transformer. Do not
use metal wedges, or soft wood.
Of course you may have a short in the wiring from the transformer
between leads - this I can't guess where you would find it, just check
the condition of the wires and look for pinches and bare or exposed wire.
If that quiets it down, then great, otherwise leave the transformer
powered up for a little while with the windings disconnected from the
power supply board (pull any fuses). see if the transformer gets warm or
hot to the touch. It shouldn't get more than slightly warm with no load...
If it starts smelling or smoking then it is toasted - has a shorted
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(Pinballs, Jukes, Video Games)
"Old pinballers never die, they just flip out."