I had the chance to try a very high end power cord, used for my stereo on my Plasma TV. The cord, Dream State "Epic" is not shielded, and I was using it just to burn it in.
The result of a high end cord surprised me, the colors were quite noticeably brighter, richer and deeper. The image was much sharper with better definition.
Once the cord was burned in, I took it off and when back to the stock cord. It took two days for me to not "need" a high end cord on my TV, the point of this response is two fold.
First power cords appear to matter, and it might be worth looking into a custom made cord. Two shielding was not an issue.
The result of a high end cord surprised me, the colors were quite noticeably brighter, richer and deeper. The image was much sharper with better definition.
Once the cord was burned in, I took it off and when back to the stock cord. It took two days for me to not "need" a high end cord on my TV, the point of this response is two fold.
First power cords appear to matter, and it might be worth looking into a custom made cord. Two shielding was not an issue.