Matthew,

You can also check R,G,B guns by looking at your monitor closely  like
1 or 2 inches a way. make sure change your resolution to lowest like 640x480
and you can see on your monitor RGBRGB .... dots if any one of them  is
missing then it means one of your gun is not working. Shake the cable  
and monitor
maybe there is loose connection. try putting factory default mode.

Andre Abelian




Matthew Fries wrote:

>If it's a modern CRT monitor, it might have a built-in menu for 
>adjustments or some sort of video generator for displaying a "signal out 
>of range" error message. 
>
>Try to invoke that menu, and see if the red comes through. You might be 
>able to cut the amount of troubleshooting in half.
>
>BTW: I have a CTX 19" monitor at home, and almost immediately after 
>bringing it home, I found out that the signal cable was flaky. I've lived 
>with this for years because I didn't want to take it back (it barely fit 
>in my tiny car), and I really like the monitor otherwise. 
>
>
>On 31/10/05 10:15 -0500, Spehro Pefhany wrote:
>  
>
>>At 06:51 AM 10/31/2005 -0800, you wrote:
>>    
>>
>>>My 19" CRT monitor displays red as black. I get a red outline on most red 
>>>objects, but the bulk of the object is just plain black. Sometimes it 
>>>works properly, but then it will start to flicker red to black, then stay 
>>>black.
>>>
>>>Any chance I could find the problem and repair it? It is a high end 
>>>monitor, but if I wreck it, no real lose.
>>>
>>>John
>>>      
>>>
>>There are three signal paths in the monitor- Red, Green, and Blue. If
>>the Red is going black, there's something wrong (probably going open)
>>somewhere in that signal path. It could be anything from the input
>>connector to the CRT, inclusive.
>>
>>Aside from just eyeballing things (sometimes successful, but I wouldn't bet
>>on it), you'd want a service manual (or at least a schematic) and some
>>experience in dealing with high voltage circuitry-- in this case, what you
>>don't know can indeed kill you.
>>
>>My bet would be that an reasonably experienced technician with a bit of
>>equipment and a schematic could find and fix this problem economically--
>>and that it's probably a bad connection or solder joint somewhere. If it's
>>not the CRT, there are no really expensive parts in the video signal path.
>>
>>Or you could just get yourself a nice bit high-res LCD panel or two.
>>
>>Best regards,
>>
>>Spehro Pefhany --"it's the network..."            "The Journey is the 
>>reward"
>>speff@interlog.com             Info for manufacturers: http://www.trexon.com
>>Embedded software/hardware/analog  Info for designers:  http://www.speff.com
>>->> Inexpensive test equipment & parts 
>>http://search.ebay.com/_W0QQsassZspeff
>>
>>
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>>    
>>

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