Re: 220uf caps and j-pac and brightness


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Posted by Guru-Choc on 2, 2001 at 6:28 PM:

In Reply to: Re: 220uf caps and j-pac and brightness posted by Andy Warne on 2, 2001 at 7:36 AM:

: Using caps cannot amplify the video signal. What it's doing is changing the DC level which may make the picture brighter but the contrast will still be low. the problem you are seeing is to do with the DC level going up and down and affecting the brightness.
: If you can let me know what monitor this is, I might be able to find a better solution. Wells-Gardner and Hantarex monitors are designed to be used with 1 volt (VGA level) or 5 volt (game PCB) video but there are a couple of makes that are'nt. One is the Electrohome G07 which can easily be modded by adding 3 resistors, another is the Kortek which I am looking at the schematics right now. The aim is to increase the gain of the video input stage.


Thanks, j-pac works fine BTW :)

Is the Kortek schems you are looking at for me via Nic anyway. I have a find in PNG looking too, Nic did a better scan on the schems, would you like that. My mate says he should have a fix soon enough, he described the problem being the same as you did so you both are on the same track :) Will post here when I get the fix, that way everyone can have the knowledge.


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