In preparation for family coming to town in the next couple days I just went to try out a couple different Vs. boards in my dualsystem. Sure enough, the board that is currently holding my Ice Climber and Excitebike chips keeps resetting. Once I was able to play about 5 minutes of EB but as soon as I stopped and went to test IC I put in a credit, selected the level and it reset with no credits on either screen. Put in another credit on IC and it reset. Went back to EB side and put in a credit and it reset. Fantastic... time to go pop those chips into another board as I want that board up and running this weekend.
(edit) sorry to bump an older post... I just came across it when trying to verify what was going on with my game.