Bally Astrocade fuzzy screen have photo...

[drummer4261900]

Bally Astrocade fuzzy screen have photo... What is causing this and how can I fix it?

 

Here is a photo:

 

The only thing I know is on every game it does the same thing.

 

Thanks for any help!

[Keatah]

Looks pretty much like digital noise.

[drummer4261900]

What is that and how do i resolve the digital noise?

 

Thanks!

[CatPix]

Does that fuzziness appears in game as well?

Does it appears on different TVs?

[drummer4261900]

Does that fuzziness appears in game as well?

Yes

 

Does it appears on different TVs?

Yes I just tried it with another 1080p TV.

[Reaperman]

at least yours still produces a fuzzy signal.

 

It could be worse. I have one that doesn't.

And no, you don't want to trade.

[+save2600]

Video chip partially fried? Could always try reseating all the I.C.'s and see if that clears it up. Does it happen right away, when you fist turn on the system? I've seen vids where people experience strange video artifacts after the system has been on for a while. Need to glue some tiny heatsinks onto some of those chips. The Bally "professional" arcade is notorious for its heat related problems.

[drummer4261900]

Does it happen right away, when you fist turn on the system?

Yes

 

The picture is the only problem. You can still see fine when you play a game its contained to just the top and bottom. The sound works.

Edited January 25, 2016 by drummer4261900

[HoshiChiri]

Have you tried connecting to a non-HD TV? You could just be seeing edges you're not supposed to due to the larger display (something I noticed on my Atari when I got my HDTV.)

Edited January 28, 2016 by HoshiChiri

[Keatah]

Looks like the text and noise are too close together. The noise area should be a solid red.

 

Check all the chips, clean and reseat them. Inspect all solder joints. Check heatsinks. Clean switches, connectors, and contacts. This is standard preliminary stuff when working on old stuff.

 

If that doesn't fix it you'll have to start swapping chips one by one, or break out the schematics and start some real electronics troubleshooting. What else is there to do? When someone says/thinks it's chip X and the problem still remains, well, you've just begun the blind-swapping process.

[+stupus]

I assume you of course aren't using a rf switchbox, correct?

[iesposta]

All great advice, but remember we are talking Bally Arcade / Astrovision.

They can die by looking at them.

I STRONGLY recommend (as does its service documents) first grounding yourself, opening and if removing a metal shield don't let it touch any components.

Next short the large capacitors.

This is all documented in its official service pages!

 

Looks like the text and noise are too close together. The noise area should be a solid red.

 

Check all the chips, clean and reseat them. Inspect all solder joints. Check heatsinks. Clean switches, connectors, and contacts. This is standard preliminary stuff when working on old stuff.

 

If that doesn't fix it you'll have to start swapping chips one by one, or break out the schematics and start some real electronics troubleshooting. What else is there to do? When someone says/thinks it's chip X and the problem still remains, well, you've just begun the blind-swapping process.

[128Kgames]

They can die by looking at them.

 

Blasphemy! Completely untrue! You cannot kill one of these consoles just by looking at them!

 

Now, if you stare at it intently for more than sixty seconds, it could quite literally burst into flames. Or not.

 

On a more serious note, drummer4261900 I know you had posted this issue on the Bally forum as well but cannot remember if you had tried a non-HDTV (such as HoshiChiri) suggested? Or more specific have you tried a non-LCD TV (tube, plasma etc.).