wontwa
Member
Star Wars with a monitor issue? Surprising, I know... :]
So I picked up an upright Star Wars with a 6100 monitor. Initially it played blind, but only showed an 1/8" of video in a vertical line on the screen. Checked the fuses on the 6100, replaced one, and it played great for about 3 minutes - however, the longer I played it the more the video would "cut out" and return. Upon one of the times of turning it off and turning it back on, I had the "x wing shows up fine but enemies & stars missing issue" as detailed in this thread:
http://forums.arcade-museum.com/showthread.php?t=125429&highlight=star+wars+tie+fighters
Replaced the 4 PROMs as indicated in the following tip from vectorlist:
> SYMPTOMS: STAR WARS ONLY: When game first turned on, no starfield
> background pattern (noticable during demo display). When game
> is played, everything appears normal until you select a
> difficulty (deathstar). Once your ship leaves the menu, no
> starfield background nor enemy attackers (tie fighters) nor
> deathstar ever appear. Gameplay is otherwise unaffected (you
> can aim, fire, etc).
> SOLUTION: Check the four 18-pin socketed ROMs 136021-110 through -113 at
> locations 7H, 7J, 7K, 7L in the middle of the main game board.
> At least one of these is bad. These are 1024x4 bipolar 82S137
> (Signetics) PROMS which contain the microcode for the math
> box. In my case -112 was bad. Frys, Jameco, and JDR
> Microdevices sell these PROMs.
and all is well again.......except I'm still getting the screen blacking out sporadically, and am afraid to mess with it too much more until I figure out where to start as I'm concerned that might have been what caused one of those PROMs to go bad initially.
Here is a link to video of the issue described, with the examples showing up at the :25 mark and the 1:05 mark - it is doing it much more frequently than this presently. You can often faintly see red images of the "fireballs" or whatever when the screen blanks out:
http://gallery.me.com/derekbetts#100213
I should note that I also ordered a new "big blue" from Bob Roberts and have installed that as well. Any ideas as to where to go next?
Any help would be greatly appreciated - I feel like the thing is thiiiiiis cloooose to working properly.
So I picked up an upright Star Wars with a 6100 monitor. Initially it played blind, but only showed an 1/8" of video in a vertical line on the screen. Checked the fuses on the 6100, replaced one, and it played great for about 3 minutes - however, the longer I played it the more the video would "cut out" and return. Upon one of the times of turning it off and turning it back on, I had the "x wing shows up fine but enemies & stars missing issue" as detailed in this thread:
http://forums.arcade-museum.com/showthread.php?t=125429&highlight=star+wars+tie+fighters
Replaced the 4 PROMs as indicated in the following tip from vectorlist:
> SYMPTOMS: STAR WARS ONLY: When game first turned on, no starfield
> background pattern (noticable during demo display). When game
> is played, everything appears normal until you select a
> difficulty (deathstar). Once your ship leaves the menu, no
> starfield background nor enemy attackers (tie fighters) nor
> deathstar ever appear. Gameplay is otherwise unaffected (you
> can aim, fire, etc).
> SOLUTION: Check the four 18-pin socketed ROMs 136021-110 through -113 at
> locations 7H, 7J, 7K, 7L in the middle of the main game board.
> At least one of these is bad. These are 1024x4 bipolar 82S137
> (Signetics) PROMS which contain the microcode for the math
> box. In my case -112 was bad. Frys, Jameco, and JDR
> Microdevices sell these PROMs.
and all is well again.......except I'm still getting the screen blacking out sporadically, and am afraid to mess with it too much more until I figure out where to start as I'm concerned that might have been what caused one of those PROMs to go bad initially.
Here is a link to video of the issue described, with the examples showing up at the :25 mark and the 1:05 mark - it is doing it much more frequently than this presently. You can often faintly see red images of the "fireballs" or whatever when the screen blanks out:
http://gallery.me.com/derekbetts#100213
I should note that I also ordered a new "big blue" from Bob Roberts and have installed that as well. Any ideas as to where to go next?
Any help would be greatly appreciated - I feel like the thing is thiiiiiis cloooose to working properly.