My recently aquired 6 slot MVS is down 1 slot. The system doesn't recognize any game placed into the 3rd slot and it does not show up under the Soft Dips section either (it only shows slots 1,2,4,5 & 6.) The plastic cartridge slot on the board even appears to be a little melted on one side. My question is can this be replaced or is my 6 slot to forever remain a 5 slot? Thanks ahead of time!