Just replaced the roms and proms with parts from Mikes Arcade and still no change.

Tried cleaning all connections and reseating the chips with no luck. Anyone have any ideas? Still new to this so any help would be very much appreciated!! Thanks.


http://imgur.com/a/p78Op

Just got a Mario Bros game really cheap. The power cord was cut and there's been some mice nest in the bottom at some point. Fixed the cord and it came on. I need to clean it still but here's my question. I can't make out any of the letters on the game. The menu when the service switch is pushed is all scrambled and so is the top of the screen where the score is at. There's no lines or size issues so could it just need the rom chip connections cleaned? Thanks!!