andyrew
Member
Hi, all.
Still having trouble with a joust machine. It's got a k4901 in it that has been recapped and it's having rolling issues and picture skew/twist. I can't figure out what is causing it and i haven't been able to find any threads with similar issues.
The game looks like it was converted to a composite sync at some point as the sync wires from the game board are twisted together in a weird combination, and the sync wires are jumped at the chassis.
When I power it up, it rolls for a bit and will eventually stop, but usually I have to give the hold a little jiggle first. Once that stops the picture will be centered correctly at the bottom but it slants as it goes up until about 6" are off the screen to one side or another.
Would this be a sync issue still or could it be another problem? I have worn myself out trying to figure out this issue. Attached is a picture of the 'tilt'.
Again, the board was recapped, the solder joints all look good and the polarity all looks right.
Still having trouble with a joust machine. It's got a k4901 in it that has been recapped and it's having rolling issues and picture skew/twist. I can't figure out what is causing it and i haven't been able to find any threads with similar issues.
The game looks like it was converted to a composite sync at some point as the sync wires from the game board are twisted together in a weird combination, and the sync wires are jumped at the chassis.
When I power it up, it rolls for a bit and will eventually stop, but usually I have to give the hold a little jiggle first. Once that stops the picture will be centered correctly at the bottom but it slants as it goes up until about 6" are off the screen to one side or another.
Would this be a sync issue still or could it be another problem? I have worn myself out trying to figure out this issue. Attached is a picture of the 'tilt'.
Again, the board was recapped, the solder joints all look good and the polarity all looks right.