[Coco] clever idea didn't work

[Robert Hermanek]

Finally found an old laptop to mess with, yes when the laptop is at 
640x480 output, the TV displays it just fine.  So it appears the 640x480 
from the Justus converter must be slightly different.  Is there any 
possibility that a high quality, very short (1 foot etc) VGA cable 
between converter and TV would help at all?  I'd drop a couple bucks on 
amazon if I thought there was a chance.

-RobertH

On 12/18/2014 8:05 PM, Cocodemus wrote:
> Do you have a pc to test? You can try switching to 640x480 for a quick test.
>
>
> Sent from my iPhone
>
>> On Dec 18, 2014, at 8:40 PM, Robert Hermanek <rhermanek at centurytel.net> wrote:
>>
>> VGA monitor on my coco3 is great, thanks to Roy Justus converter, but no artifact colors on old games.  TV on my coco3 great, I get colors, but can't do 80 columns.  Epiphany:  I found an LCD TV sitting here, it has composite in, and VGA in.  So I hooked both up to my coco at the same time, now I can just hit the "input" button on remote control to switch between VGA and composite signals at will.  Perfect, except:  The TV will not display the VGA signal, says "mismatch resolution."  But the manual for TV says it supports 640x480, 60hz.  I plugged converter into a normal vga monitor, worked perfectly, brought up the menu and it says 640x480 60hz. So.  Maybe TV doesn't support that res, and manual is wrong.  Or... could there be some other reason the converter output would not be recognized universally?
>>