Hello Everyone, lots of good information to digest here. I am still learning the terminology but have been a lurker here for a while.
Wanted to give a little more background on the work I completed and where I am left now. I originally asked how to fix booting up into the "2500 4" error, which may not actually be an error.
I started with sorting out the battery installation. The original 3X battery holder was still on the board and not working even with fresh batteries. The machine would boot up into test/audit mode every time it turned on. I could cycle through that mode to eventually get it to game over,/attract then I could credit up and play. From there everything worked, speech, music, multiball, switches/drop targets sticky but working.
I removed the old battery holders. Installed a new remote battery pack. Then everything seemed to work. The first time it booted into test/audit mode I reset to factory settings following the guide in the instruction manual. From there it boots up correctly every time into attract/game over mode (If I chose to go into test/audit mode it still shows 2500 4). The machine remembers how many credits have been loaded even after power cycling. But, I am not even close to beat 2,500,000 so I can't be sure it is saving the high score. After playing for a few rounds (about 4 or 5) the drop targets stop popping back up after you knock all 3 down, and the game seems to not realize when a ball is lost or locked for multiball. I have done several power cycles both coin door open and closed.
Before looking to buy replacement boards, any hotspots to look into with the above described? Am I understanding it correctly that "2500 4" is just my game version? Could I still have a memory issue like Mathazar mentioned?
Appreciate all the knowledge in this group.
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