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Title: Ceronix 1492 into Sigma Game Post by: badbaud on December 10, 2008, 03:57:29 AM Trying to convert Ceronix 1492 to work with Sigma game.
Bally jumper mods got me proper video and H/V signals but this Sigma board puts out 26.47KHz (measured) for the horz signal. How do I mod the LA7850 section to handle this? The horz pulse width is wider (say 100x wider) then the standard IGT if that makes a difference. Put the 3K horz adj pot onto board to adjust freq. but most I get is a stable picture doubled twice on screen. Any more adjustment past that and the monitor kicks off. Title: Re: Ceronix 1492 into Sigma Game Post by: badbaud on March 10, 2009, 10:20:30 PM Bought a Ceronix 1493 VGA board and with the proper tube (won't work with standard 1492 tube) got a game display.
Title: Re: Ceronix 1492 into Sigma Game Post by: TZtech on June 01, 2009, 04:38:18 PM Hello BadBaud
Have recently recieved 10 Sigma pokers with Fancy monitors and they are rubbish - Would prefer to change to ceronix. Please could you provide more details on your mod wrt model number used and any changes made Regards Ian |