Mitsubishi ws-55809 green screen

I got a hand me down Mitsubishi WS-55809 tv.  The component 1080i also known as DTV ports, were never used by my parents.  So when I got it I hooked up my PS3, and the only port that works (on the DTV ports) is the green, all other ports on the tv work except the red and blue DTV ports.  So I tried the Xbox 360 and a Blu-ray player and still no go.  I bought a used input/terminal board and that didn't fix the problem either.  So I started doing a little research online and found that most people are having a convergance problem and had to change the IC's.  But none of the syptoms sound like what I am having.  Could this be the problem, if not does anyone know what it could be?  Oh yeah I already tried resoldering the IC's, and I do board repair for a living so If I have to do some soldering thats not a problem.  Thank You