Olevia Syntax 42 inch turns green through hdmi

Question

I have a few items in my house that can use hdmi yet I don't get to use it because everytime I hook something up to my tv it all turns green. I have tried reaching Olevia several times about this. The first time was right after buying my PS3 which was the first piece of equipment I purchased that really needed hdmi at which point they told me they havent had an opportunity to test it with a PS3 yet but they would get back to me as soon as they did. I never heard back from them. About 2 months later I called back never got a technician only got to leave a message. I called back a month later still didn't get anyone left another message. This has been going on for about a year now and I don't think they are going to help me and my tv is no longer under warrenty so maybe you can help. I have been told that it can be fixed with a new hdmi card or something like that and it is easy to replace but where can I find one. Any thoughts? thanks guys