Donkey Kong Jr Arcade Cocktail - Graphics problem w/ sprites

[Amplibax]

I'm having a graphical issue with a Donkey Kong Jr machine I just picked up. The issue appears to be with the character sprites only. I was wondering if anyone could help narrow down the issue to certain rom chip. I may try re-seating some of the roms before looking for replacement as some people seem to have success with that.

Here's a photo as well as a link to a short clip I took:



http://www.youtube.com/watch?v=acunWRED_lI

[Stark]

Thorough cleaning of the board and any connectors?

[EllertMichael]

Does the board do a hardware test at boot up?

[Amplibax]

Thorough cleaning of the board and any connectors?

The boards are actually super clean. The boards don't use an edge connector like jamma if that's what you mean.

Does the board do a hardware test at boot up?

There isn't anything like that available on this game.

[EllertMichael]

Have you tried slightly flexing the board before booting it up?

[s1mplehumar]

Here's a handy little reference. It may or may not be useful. I'll be fixing my Jr. here in the coming months.

http://mirrors.arcadecontrols.com/Braze ... index.html

[Bagel]

The boards are actually super clean. The boards don't use an edge connector like jamma if that's what you mean.

Eh? DK Jr. should have a pin edge on the top board opposite side of the two ribbon cables and the rainbow cable that connect the two boards together. Can you snap a shot of the board you've got?

[Amplibax]

The boards are actually super clean. The boards don't use an edge connector like jamma if that's what you mean.

Eh? DK Jr. should have a pin edge on the top board opposite side of the two ribbon cables and the rainbow cable that connect the two boards together. Can you snap a shot of the board you've got?

I don't know why, but I was thinking it used all the pin connectors like the board I have in my original Donkey Kong cocktail. I cleaned the edge connector and reseated and cleaned all of the eproms, but that didn't fix it.

I went ahead and ordered an eprom eraser and an eprom flasher. I figure it will be worth my while since I plan on building up my collection of arcade games.