I purchased a sony kds-50a2000, about 2weeks ago. Have and it set up with componet wires since i got it. Friday nite I was at BJ's picked up a hdmi wire it was only $22 so I figured I would give it a try. For some reason now sometimes when I change the channel from a HD channel to a SD channel all I get is colored snow. The only way to reset it is to turn the tv or the cable box off. If I switch to the componet input it show the picture normal. Is it something with the box or something with the tv??