Hi,

I had this issue with an Indiana Jones that was re-imported back from Japan.....

I measured all the voltages coming out of the transformer (after all the jumpers) and everything was running hot.... if I recall it was all about 12% above what it should be....

The transformer jumpers can be set up for low voltage situations (Japan being one) so I figured this would be easy... just move the jumpers back and everything would be ok..... EXCEPT the fact that the jumpers were in the correct spot for the U.S. So my IJ sat around not used for a long time as I could not figure it out.

SOLUTION: Eventually I figured out that someone did in fact adjust for lower voltages, but they did it on the plug that is attached to transformer!!!!, NOT the side with the jumpers (which is what Pinwiki focued on). I swapped two wires and was good to go, everything fixed. Quick shout out to pinball.rec group as they were the ones that were able to show me a schematic for the transformer that quickly showed me the issue.

The other place you can look is on the bottom of the transformer near the wires, I think it shows the voltage of the wires (its not super clear as there are groups of wires), but when I looked at that it showed the wrong wire was being fed into the game if you started to trace it........ i.e. the higher voltage coming out of the transformer.

Jim

Hope this helps... My machine sat idle for far too long as I did not want to turn it on until I figured it out (and yes, I was looking at buying a new transformer ...

Also be sure to check the voltage coming out of the wall socket, maybe your house is running high.