Unplug the TV for a couple after you have any problems to reset it, if you dont it will still have the problems.
I have had the Wii with $19 cmponent cables from ebay and never had issues until recently all of my upperSD channels and VCR input would show gray lines but would have audio, I only use the HD tuner. I reset the TV and they came back, but when I reset the TV the AI was reenabled and made the TV shutoff after a min and wouldnt come back without unplugging it. So I turned off all AI settings, now it is phine, weird stuff here???
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5.1 - Klipsch RF3 & RC3 - Boston VR500W Sub - CR4 for rears