So I picked up a Jaleco Mega System 32 and a handful of carts Unfortunately the Desert War cart is causing me problems.
the game boots fine and plays normally but about 1 minute into game play the screen displays garbage followed by a reboot.
Interestingly when letting it sit in attract mode it will go through attract mode fine and then when it goes to the example gameplay it reboots at about the same place it does when playing the game.
the main board works fine with every other cart I picked up so the problem is in the ROM board.
I went into test mode and did a ROM check and everything came back "OK". I opened up the cart and looked for damage, there are a few places where it looks like the pins have been reflowed (they all look good) but other than that the PCB looks like it's in physically pristine condition.
I tried reseating all the socketed chips and even tried running the ROM board without the case but no luck.
Any advise on other things to check/troubleshoot would be appreciated.
the game boots fine and plays normally but about 1 minute into game play the screen displays garbage followed by a reboot.
Interestingly when letting it sit in attract mode it will go through attract mode fine and then when it goes to the example gameplay it reboots at about the same place it does when playing the game.
the main board works fine with every other cart I picked up so the problem is in the ROM board.
I went into test mode and did a ROM check and everything came back "OK". I opened up the cart and looked for damage, there are a few places where it looks like the pins have been reflowed (they all look good) but other than that the PCB looks like it's in physically pristine condition.
I tried reseating all the socketed chips and even tried running the ROM board without the case but no luck.
Any advise on other things to check/troubleshoot would be appreciated.