Loomis,
Best thing you can do to debug an EM is to get the schematic. The one for Paddock is available on IPDB:
https://www.ipdb.org/search.pl?any=paddock&search=Search+Database&searchtype=quick#1735
You should see the link for the PDF of the schematic and also for the Instruction Manual. The manual will have a step-by-step explanation of the startup procedure for the pinball. This explains what happens in the pinball when you go start a game. Following this and the schematic will help you on the debug.
Regards,
Alberto