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Atari 5200 composite video mod, no chroma


8 replies to this topic

#1 sermajic OFFLINE  

sermajic

    Chopper Commander

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Posted Tue May 31, 2011 3:36 PM

did this

http://www.atarihq.c...0faq/04_13.html

tried on 3 5200, no chroma on either , just clean black and white video
tried changing


RCA jack
2k 1uF __
Chroma ---/\/\/---|(-----------------------------------O__ CHROMA
| OUTPUT
GND \/



the 2k with 500 ohms as read in other site, no luck
also tried adjusting the pot for colour

please help!

#2 sermajic OFFLINE  

sermajic

    Chopper Commander

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Posted Wed Jun 1, 2011 8:20 AM

longhorn engineer? anyone?
help!

#3 sermajic OFFLINE  

sermajic

    Chopper Commander

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Posted Wed Jun 1, 2011 3:26 PM

the full link is

http://www.atarihq.c...0faq/04_13.html

Edited by sermajic, Wed Jun 1, 2011 3:26 PM.


#4 Official Ninja OFFLINE  

Official Ninja

    Stargunner

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Posted Thu Jun 2, 2011 6:36 AM

I really am surprised that no one can help you with this!

#5 classics OFFLINE  

classics

    River Patroller

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Posted Thu Jun 2, 2011 6:43 AM

What are the colors on the resistor you are picking chroma off of?

Steve

#6 sermajic OFFLINE  

sermajic

    Chopper Commander

  • 215 posts

Posted Thu Jun 2, 2011 4:27 PM

View Postclassics, on Thu Jun 2, 2011 6:43 AM, said:

What are the colors on the resistor you are picking chroma off of?

Steve

taking the chroma from the second resistor from right to left

Edited by sermajic, Thu Jun 2, 2011 4:28 PM.


#7 sermajic OFFLINE  

sermajic

    Chopper Commander

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Posted Sat Jun 4, 2011 12:07 PM

Thanks so much steve ! Its in colour now!

Now if we can solve that "out of phase" chroma

#8 jamisonia OFFLINE  

jamisonia

    Combat Commando

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Posted Tue Aug 16, 2011 7:34 PM

I am having this same issue. Does anybody know the solution?

#9 jamisonia OFFLINE  

jamisonia

    Combat Commando

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Posted Tue Aug 16, 2011 10:11 PM

View Postjamisonia, on Tue Aug 16, 2011 7:34 PM, said:

I am having this same issue. Does anybody know the solution?


I fixed my issue. It seems on some board revisions chroma comes out of the rightmost resistor not the 1st over from the right as the mod describes.




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