u/CommanderGumby1

Currently looking for any help or information on a current issue I'm having with my Simpsons 4 player arcade cab. The game works and plays as normal for the most part with sound, but my issue lies with the board, because as the game sits in attract mode or when playing there are vertical lines running through some of the sprites as the game is played. Through some digging I found online, some of these old Konami boards from the 90's in some cases just need a little more juice by turning up the power on the PSU. After testing voltages that were the correct range coming from the PSU and going into the board I turned up the 5v to get a reading of 5.28v coming out off the PSU and 5.16v going into the board. As to why there is that big of a discrepancy for power, I do not know and maybe some of you can give me some more insight into that as well. But as far as the game goes this seemed to get rid of most of the vertical lines on the sprites for about 2 to 3 weeks. Now it seems as if those lines are back in full force and slightly worse than they were before this temporary fix. I was told it might possibly be the 072B08 Konami Mask ROM located towards the bottom of the board, if true, where would I even get replacement parts for the PCB like the chipsets?