Hi, recently obtained a Vectrex (Serial No: 2023598) a month ago. The Bezerk cartridge that came with it and the Solar Quest cart obtained separately work fine. My problem is that I have obtained a 72 in 1 board that simply won’t work, it just goes straight to Mine Storm. I took the board to the Retro Revival in Walsall and verified that the 72 in 1 card works in another Vectrex. I also obtained a few eprom boards from retroelectronik and programmed up a couple of eproms and soldered them to the boards but alas same result, it just boots into Mine Storm. However I also have the board with the Zif socket and with that I have no display whatsoever when it is turned on with or without an eprom inserted. Is there anything that I could look at/measure to determine whether or not the cartridge socket/power is teetering on the edge somehow? To my knowledge the machine has not been recapped.
I was looking forward in having a bash at a bit of development and it would be great if I could write my experiments to an eprom. Any help would be appreciated.