Build Your Own Arcade Controls Forum
Main => Monitor/Video Forum => Topic started by: Blue440Duster on October 09, 2008, 08:47:22 pm
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Well I'm thinking about going to look at a asteroids that the owner says "Video doesn't travel to last inch of screen. No scrunching, just shrunk."
Could use some collective wisdom on what causes this, I really don't want to buy it if it's going to require major work as I have plenty of that allready(the ball & chain makes sure of that)
He also says it needs a cap kit, which after a little research on this forum doesn't seem like to big of a job.
Thanks
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there are x, y ctls on the game pcb
and on the monitor : y sizing r79, x sizing r76
qrz
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So it should be just an adjustment? no replacing of parts?
About the cap kit.... I see from research how to do it but I'm not clear as to the reason why to replace them :dunno, as a nubie I guess I need to be enlightened
Thanks for any help.
Blue440Duster
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Electrolytic capacitors (and only those, but usually when we say "caps" we mean those) contain a gel that dries up because of heat and age. The results is that the electrolytic cap starts to loose it's possiblity to "store electricity" (see it as a "temporary" battery).
The heat factor is a major issue on monitors because CRT monitors simply generate a lot of heat. The issue is less on Power Supplies etc. but it's still advisable to replace those too after 25+ years.
Bob Roberts sells kits.
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O.K. played with the Y control and fixed the shrinkage problem............ one more question, I have a speaker humming issue and sometimes the hum will get loud then the games(asteroids) sound will get quiet..any suggestions?