Quoted from YeOldPinPlayer:
meloyelo51 has a shop offering ROMs here on Pinside and excellent customer service.
Thanks for the referral!
Yes I can help if you need them burned...I am licensed/authorized to do Bally/Williams' games.
If you just need rom images to burn yourself you can download from planetarypinball.com or I second ipdb.org
Off the top of my head, normally I would think you would be getting checksum or boot errors if the roms went bad, but it is possible depending on the game.
You also may want to try a factory reset and check your batteries. Memory could have corruption. If you still have batteries....you SHOULD replace with NVRAM. (be sure to write down any settings/audits you don't want to lose as they will be cleared)