Problems connecting HDMI to TV

Hello.
I'm expenciering problems when I conncet my MacBook Pro to my TV.After a while, the screen gets negative colours. I just bought a new cable today, and it still happens.
My TV is Phillips 32", and it's about 5 years old. I don't know the exact name; I guess it doesn't really matter, since I have read that many other are facing the same problem.
Does anyone know how to fix the problem? In this thread https://discussions.apple.com/thread/3382106?start=15&tstart=0 I found a link to something that should fix the problem, but the link doesn't work now and I was furthermore doubting whether there should be a new file to download. My operating system is Mountain Lion 10.8.4.
I really appreciate any help!
Thanks in advance,
David.

Hi there,
I would recommend taking a look at the troubleshooting steps found in the article below.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
-Griff W.

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cbrookhart wrote:
I am having problems getting HDMI signals to come through on the receiver and TV. If the home theater system has been off for several hours, I am finding that when I use the Harmony 700 remote and select the watch TV option, the TV is displaying 'Weak or No Signal' and the receiver is displaying 'no signal.' I have to turn everything off and back on again up to six times before I can finally watch TV. I have to do the same thing if I want to watch a blu-ray movie.
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Problems connecting HDMI to TV

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