This may be a new forum, but maybe some of the people viewing would be able to help. I bought an original Donkey Kong cabinet, that had been converted to Arkanoid. I like Arkanoid so figured I should just try to get that game working, but repaint the cabinet to the original Donkey Kong specs.

Well I have never done anything electronics wise, and this didn't seem too hard, but something new to learn. So far I've learned a lot at arcadecontrols.com, but might as well start here at a new forum to learn with everyone.

Please let me know if anyone has seen this and what it might mean.

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Romstar Arkanoid                             
       
   Arkanoid wire harness (G)        Arkanoid wire harness(H)         
    parts side      |    solder side         connection         |
---------------------------------------  ----------------------------
ground          1  | A  ground                         ground  | 1           
video red       2  | B  video ground                   ground  | 2
video green     3  | C  video blue                     ground  | 3
video sync(neg) 4  | D  N/A                            ground  | 4
speaker (+)     5  | E  speaker (-)                    +5 VDC  | 5
post            6  | F  post                           +5 VDC  | 6
N/A             7  | H  N/A                            +5 VDC  | 7
coin switch     8  | J  N/A                              N/A   | 8
coin meter      9  | K  N/A                            +12 VDC | 9
N/A             10 | L  N/A                              post  | 10
serv switch     11 | M  tilt switch                      N/A   | 11
1p select       12 | N  2p select                        N/A   | 12
N/A             13 | P  N/A             
N/A             14 | R  N/A             
1p right        15 | S  2p left         
1p left         16 | T  2p right       
N/A             17 | U  N/A             
N/A             18 | V  N/A             
N/A             19 | W  N/A             
N/A             20 | X  N/A             
1p fire         21 | Y  2p fire         
N/A             22 | Z  N/A             


           Non-Nintendo  Nintendo
        +------------------------------------------+
        |         ======  ======        __         |          Video Input
        |  ___                         /B \        |          From Game PCB
16vdc   |  +++                         \__/   + 6  | Sync
Required|  ---                          __    + 5  | Ground
for non |  123                         /R \   + 4  | Ground
Nintendo|                              \__/   + 3  | Blue
games   |                               __    + 2  | Red
        |                              /G \   + 1  | Green
1.16vdc |                              \__/        |
2.16vdc |                                          |
3.Ground+------------------------------------------+


This is almost definitely a toasted PCB. Inspect the board thoroughly and look for any burn marks or damages. You can even smell it if it's been burnt (indistinctable smell of burnt plastic).

Probably a shot in the dark, but see if you can find a replacement board (even just for try-outs) and I'm pretty sure it will work. The scrambled graphics you are seeing isn't because of the monitor, because it would cause different looking artifacts if the monitor was busted.