Galaga video issue (video - ooooh exciting)

[DanoND]

No dice. Doesn't even matter if the sync is hooked up; screen garbage is the exact same. Strange, when I turn the pots on the neckboard nothing changes, either. No color changes, nothing. The majority of the screen garbage has a blue tint to it.

Dammit. Bedtime. You know, there's no guarantee that I have this thing all wired properly. I think I do, but I put it back together from someone else's pieces, so there's a chance I missed something. I dunno what, but that would be my luck.

 

[DanoND]

Dunno what I did differently but it syncs now. The vid is still screwed up, though. The starfield looks good, the rest of the game is messed up. New vid:

http://www.youtube.com/watch?v=0XgQjQ2wCQY

I'm thinking it's no longer a monitor issue and is a board issue now.

 

[DogP]

That looks like it needs a horizontal freq/hold adjustment... everything looks like it's wrapping, like in this pic: http://www.therealbobroberts.net/slanted.html . Your starfield looks fine because random narrow dots still look like random narrow dots when wrapped, but anything with width gets broken apart.

DogP

 

[Dokert]

Adjust the H Freq on the chassis, it is not on the neck board. There is nothing on the neck board that is causing your problem.

 

[DanoND]

Fixed. Adjusted horiz freq like suggested and just played some games. So fun.

Thanks mod, dokert, dogp, etc. Hugely helpful.

 

[ManiN]

so you just tweaked it and it held fine with a good pic? Mine had similar issues I believe were from a recent capkit and 'upgrade' as suggested on the bob roberts kit (which he mentioned an adjustment of the hor-freq would need to be made) and I read this, and tried to tweak mine but it never made a difference throughout the entire range. Once and a while it'll just 'snap' to the right pic and stay at random without me touching any adjustments, but when I shut it off, then turn it back on, it goes back to the horizontally streaked whackyness.

 

[DanoND]

Definitely an H-sync issue. The potentiometers go bad, maybe try replacing it.

 

[ManiN]

might have to regardless. I think I stripped it out adjusting it up and down... I'm going to re-flow some things and give it another shot. Hopefully the coil isn't ruined either ($10 wasted).