I picked up a Sea Wolf game recently and it has a video problem. There are often vertical rows of dots across the screen. It is randomly worse or better on some resets. If I start a game it typcially plays for a few seconds then goes back to the opening screen. If I leave it on the opening screen eventually it freezes.
Before changing any chip, and with power off, reseat the Eproms carefully, and check the connector between the two L-shape boards' interconnect. Those games are notorious for issues there.
Cheers, - Sylvain.
Looking for 1966 Bally Capersville, 1967 Bally The Wiggler, 1981 Stern Viper, 1986 Pinstar Gamatron, 1986 Williams Grand Lizard, 1991 Williams Bride of Pinbot, and a few others. Cash or some trades available. Could also repair a machine of yours +/-$ if needed, in exchange for one machine on my want list, non-working/unshopped welcome!
Before changing any chip, and with power off, reseat the Eproms carefully, and check the connector between the two L-shape boards' interconnect. Those games are notorious for issues there.
Cheers, - Sylvain.
Yep, tried all of that, even pulled the Proms and the dots still sometimes show up when removed. I'm going to try holding each RAM chip in reset to see which one causing the problem.
Pins - http://www.pinballowners.com/snazzy81 Vids - Centipede, Puckman, Mame Cabinet, Megatouch Double Platinum, Sea Wolf, 60in1 Generic Cocktail, 60in1 Taito Cocktail, 1256in1 NBA Jam cabinet, Pacman, Space Invaders Misc - Pachinko, 2 Pashislos, Roberto Foosball, 1939 Bally Variety Sequence Game, Royal Hawaiian Bowler, The Grappler, Chicago Coin Hockey Champ
If that does not work, I will grab a boardset next time I am out there, from another machine Hey maybe you can get it yourself!! ha ha
Thanks for that! Where was that place? I'm still in for going across again next time. I'm hoping to learn about the board set & fix it just for interests sake. Found a couple really good repair docs on the Midway 8080 system.
Pins - http://www.pinballowners.com/snazzy81 Vids - Centipede, Puckman, Mame Cabinet, Megatouch Double Platinum, Sea Wolf, 60in1 Generic Cocktail, 60in1 Taito Cocktail, 1256in1 NBA Jam cabinet, Pacman, Space Invaders Misc - Pachinko, 2 Pashislos, Roberto Foosball, 1939 Bally Variety Sequence Game, Royal Hawaiian Bowler, The Grappler, Chicago Coin Hockey Champ
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