Rasterlist Archives: RE: Questions about Medium Res monitor chas

From: Paul Sommers <Paul.Sommers_at_cwo.com.au>
Date: Tue May 09 2000 - 17:56:07 EDT

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>2. 25K5501 - Can't find a scan of the manual for this one. It came out of a 
 >25" standard res game. Can I use it for standard 19"? (The 79XX says it will 
 >work on a 25") Do I need to jumper it or will it auto detect?

Standard res is standard res for the most part.  Aside from some issues with sync, any standard res monitor will work for any standard res game.
 
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This brings up another question which may seem pretty basic, but I never wanted to find out the hard way. What happens if I put a 25" chassis on a 19" tube... or for that matter a 14" tube? This actual chassis is from an 25" Demo Derby (island cab)

I would imagine that the HVT would need to give out much more voltage to a 25" tube than for a 19" tube. So the voltage would need to be turned down at the very minimum. Or is that what you are turning down when you turn down the screen control?
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>3. I have a 14" monitor - brand unknown. I have capped it and replaced transistors. When I power up I get a lit neck and glow on the screen, but after a couple of seconds something shuts it down. After this when I power up again immediately it immediately shuts down.

Can I assume that "brand unknown" means no manual?  You might have a hard time with this one.  Have you looked at Bob Roberts page of monitor chasis pics to see which one looks close?  I forget the URL, but you can look it up on deja.com.
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Yup - checked Bob's page - it's not there. Not only is there no manual, but there is not one piece of English text on it. It has the 'rollbar' chassis design like the Sanyo 14" that Atari used. It also has a switch in the set of screen controls which I haven't worked out what it's for. When it is powered on (and stays on for a minute) I can flick this switch and the screen 'flatlines' - single line across the screen - like no deflection. Anyone know what this would be used for?
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Jon

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Received on Sat May 13 08:43:49 2000

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RE: Questions about Medium Res monitor chassis