Intellivision Composite mod-Video signal streaking

[INTV123]

I've been trying to mod my intellivion 2 to output composite video. I almost have the thing working, but the video signal is still having problems. text characters will start to shake after about 3 seconds of running, and there is a white line going down the screen lined up with the characters. I tried putting a 2000uf cap across the 5v line, but that didn't do anything. Ive checked the mod board multiple time times, but haven't found any problems with it that fixed the signal. also the rf modulator never output any video signal so i don't have any way to see if its a problem with the console. also don't have any extra rf modulators or consoles to test with. 

[Intelligentleman]

Can you explain a little more about the shaking text characters?

[INTV123]

12 hours ago, Intelligentleman said:

Can you explain a little more about the shaking text characters?

like after a few seconds parts of the letters will be shifted over from where they should be and shake slightly. I can post pics tonight of it.

[Intelligentleman]

11 minutes ago, INTV123 said:

like after a few seconds parts of the letters will be shifted over from where they should be and shake slightly. I can post pics tonight of it.

Interesting. I was just trying to rule out any normal jumpiness that might be fairly common. My display has a slight jump to it.