Donkey Kong Jr Board Problem [video posted]

ScumBum

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Heres some videos of my DK Jr board problem . Its not the cab because I play my DK board in it with no problems . The two different videos show what the board does when you turn the game on , it will do one or the other .





 
replace your Z80 with a known good one and test it again.

Awesome Dokert !! Good thing your in Washington cause I'd kiss you right now .

Swapped the Z80 from my DK board and the game is now 95% there . Played it for about 15 minutes .

Theres still 2 minor problems .

1. Grafix glich , I posted videos of it .

2. Walking , climbing , jumping , analog sounds are ok . Background music is very faint and sounds distorted . Is the solution according to http://www.brasington.org/arcade/tech/dkj/ " Digital sounds (eg music) very soft compared to analog sounds. Bad audio amp Chip 7K (LM324). "



 
video, try reseating the interboard ribbon cables.

Audio, try adjusting the pot on the boardset. Someone may have messed with it thinking it had something to do with video.
 
video, try reseating the interboard ribbon cables.

Audio, try adjusting the pot on the boardset. Someone may have messed with it thinking it had something to do with video.

I don't think DK Jr has that adjustment pot like DK . I looked all over the pcb and the manual doesn't mention it .
 
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