I'm trying to recover from an electrical issue that I had a few months back on my twilight zone. I needed to replace my transformer, and I'm verifying voltages before connecting the new transformer to the playfield and backbox. I know voltages coming out of the transformer will be higher then the schematics indicate because there is no load on the transformer. What doesn't make sense to me is the voltage differences between the unloaded Gilligan island transformer and the unloaded twilight zone transformer WHEN the twilight zone transformer has an extra plug on its' input side.
Twilight zone has an extra 6 pin connector between its transformer and the plug/fuse input that Gilligan does not have.
When the Twilight zone transformer is connected to the main power without the extra connection to the coin door, the output voltages for the twilight zone machine and gilligans island are the same.
When the twilight zone extra 6 pin connector is connected to the input side of my transformer, voltages on the twilight zone transformer output are significantly different then gilligans island.
Starting with the 2 prong violet transformer output connector, schematic say 100 VAC. Gilligan reads 112VAC, Twilight Zone WITHOUT extra connector 112 VAC, Twilight Zone WITH extra connector reads 129 VAC. The higher voltages from twilight zone are consistently high across all other output connections, but only when the extra connection is in place. For example, the 15 pin connector per schematics is supposed to have 80 VAC between pins 5 and 8. Gilligan is reading 89.2 while twilight zone is reading 102.9.
It seems this extra connection is doing something to my transformer input voltages thereby causing bad output voltages. I'm thinking this extra connector is the interlock, but I still can't imagine why it would alter the transformer voltages. I've attached photos of the twilight zone transformer with the extra connector as well as a photo of the wire from this connector to my coin door.
Anybody run into this one before? Thanks!