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Weird color issues with av mod?


4 replies to this topic

#1 genfuyung OFFLINE  

genfuyung

    Star Raider

  • 85 posts

Posted Thu May 18, 2017 9:00 PM

Picture shows the issue. Antarctic adventure illustrates it really well. The sky starts blue at the top and gradually turns purple. Then after that pretty much all the blues just turn purple. Console is av modded and running through a framemeister. Any ideas?

 

I think its the av mod I bought. If I wiggle the actual board around the colors get better and the image sharpens but then cuts out completely. Ive had nothing but problems with the chips ive bought from this guy so I guess thats the issue.

Attached Thumbnails

  • coleco problem.jpg

Edited by genfuyung, Thu May 18, 2017 9:19 PM.


#2 Bmack36 OFFLINE  

Bmack36

    Moonsweeper

  • 278 posts

Posted Thu May 18, 2017 9:36 PM

What board are you using and where did you tap your connections?



#3 genfuyung OFFLINE  

genfuyung

    Star Raider

  • Topic Starter
  • 85 posts

Posted Thu May 18, 2017 9:40 PM

What board are you using and where did you tap your connections?

Retrofixes board. I followed his instructions exactly.



#4 NinjaWarrior OFFLINE  

NinjaWarrior

    Stargunner

  • 1,903 posts

Posted Fri May 19, 2017 2:57 PM

Try it on a CRT set with Composite



#5 -^CrožBow^- OFFLINE  

-^CrožBow^-

    River Patroller

  • 4,914 posts
  • Collector of Fine Atari and Sega Antiquities!
  • Location:Ivory Tower, Fantasia (Oklahoma)

Posted Fri May 19, 2017 3:58 PM

The rainbow effect around the white lettering is similar to what I see on my flat panel when I'm using the s-video monitor out but the source is a composite signal. So I have to set a switch on my upscaler that switches to the composite output. That cleans it right up. But the color fading effect I've not seen before, other than when the voltage isn't strong enough or rather perhaps, the current?

 

I have one of Yurkie's composite mod kits in my CV and it looks great! Similar in design to what you posted from Retrofixes, but I believe the connection points are bit different. I know the audio on mine is not pulled from within the RF can and I pull it from one of the leg of one of the caps near the back edge of the board.






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