Indiana Jones and the temple of doom color missing / graphics _Help

[Buynsell]

Hello, I got a few graphic issues. Just picked up the cartridge and playing in my marble madness. Game is playable, but quite a few things not right. Enemys on first level missing color, or color is off, 2nd level mine cart on enemy shadow color is off, enemy color off, 3rd level, gem is missing colors, Indy's pants glow like the fire, enemy's are outlines, and missing things.

 

[barristr]

Likely bad prom or prom sockets. I've found the sockets on these, like most Atari games, are crap and corrode easily. I'd start there first. Lines in characters can be one of the slapstics or the PIA chip.

 

[Buynsell]

Thanks for the response. Do you think it could have anything to do with voltage? When I first installed it in my marble madness the board was getting 4.8v. I reached out to the seller who has been great at trying to help me too, but he felt it was a voltage issue. He said the board runs fine at 5.9v. I thought this sounded too high but I raised the voltage as high as it would go which was 5.5v, no difference or change. So I'm basically curious what you think about that?

 

[barristr]

Don't run it that high (5.9). You're gonna fry something. 4.8v is a little low, but these can run on that voltage. I'm not saying you won't get some issues, but it's certainly safe for the board. Clean the cartridge edge connector. I find those get cruddy often and can cause booting and other issues.

 

[Buynsell]

Just an update: visual inspection revealed the bent leg in this photo. The bent leg was the problem with my graphics issues. I added a jumper to where it should go and all is well. Thanks for the input above and thanks to @aztecf for his guidance. Problem solved!

 

[barristr]

See, told ya it was a prom issue.

 

[bakerhillpins]

He said the board runs fine at 5.9v.

Don't run it that high (5.9). You're gonna fry something.

YIKES... Valid TTL power is 5 volts, +/- 0.25 volts

Just an update: visual inspection revealed the bent leg in this photo.

WOW, I've not seen that type of an insertion issue in a LONG time. On a mechanized DIP install that is.