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Star Wars upright - restoration
shilmover:
--- Quote from: Level42 on November 23, 2007, 06:13:57 pm ---Tough one, but there is a dip-switch that sets the game in freeze mode. You can advance screen by screen by pressing a fire button.
Check if it does that when it freezes. If so, maybe the dipswitch is making poor contact, or is not entirely into one of the end positions. I think there was a series of PCB with poor quality dip-switches, I think I read an Atari Service Bulletin about this....not 100% sure though....
--- End quote ---
I will check that, but the strange thing is that when it freezes, the screen goes mostly black with only a few components (like a Tie fighter, a fireball, part of the shield indicator, etc).
shilmover:
--- Quote from: shilmover on November 23, 2007, 06:52:34 pm ---I will check that, but the strange thing is that when it freezes, the screen goes mostly black with only a few components (like a Tie fighter, a fireball, part of the shield indicator, etc).
--- End quote ---
Okay, fixed it. I ran the diagnostics (Duh!!) and it came back with VG RAM1 at 3M Bad which is Video RAM 1. I replaced that with the one from my other board set (the one that has now decided that it should work without video (sigh)) and it worked fine. Kids had a great time last night until this died they will be stoked to hear that she's alive again. >:D
I also centered the Yoke (had to do it by removing the gears for the X & Y axis, centering the Pots and then reattaching the gears). Plays much better now. ;D
Anyone know where I can get replacement chips for these? How to troubleshoot the other board?
Level42:
Shil,
You really, really, really should read the entire thread about my SW CP....
http://forum.arcadecontrols.com/index.php?topic=68094.msg716675#msg716675
I had about the same thing happening. A bad VG RAM. (VG stands for Vector Generator, not video by the way).
I moved it around to see if the problem would move with it which it did. I ordered replacements with www.arcadechips.com
Check all info out here (including what chip to order):
http://forum.arcadecontrols.com/index.php?topic=68094.msg747637#msg747637
shilmover:
--- Quote from: Level42 on November 24, 2007, 05:15:06 pm ---Shil,
You really, really, really should read the entire thread about my SW CP....
http://forum.arcadecontrols.com/index.php?topic=68094.msg716675#msg716675
I had about the same thing happening. A bad VG RAM. (VG stands for Vector Generator, not video by the way).
I moved it around to see if the problem would move with it which it did. I ordered replacements with www.arcadechips.com
Check all info out here (including what chip to order):
http://forum.arcadecontrols.com/index.php?topic=68094.msg747637#msg747637
--- End quote ---
i did actually read your thread, but it was a while back. :-) sorry for duplicating info.
Level42:
Ah oops :D
I didn't mean it that way....I just found it such a coincidence that the same problem happened to your SW !
Apparently these RAMs are getting bad after some time...
The 5116 works nice as a replacement for the 2016. I was a bit worried because they are a tad slower thant the 2016 (-15 instead of -10) but there was not a single problem since I replaced it.
Here's a direct link:
http://www.arcadechips.com/product_info.php?products_id=116
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