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power cord affects on video?

Has it ever been discussed before if power cords can have an affect on video quality for example with bluray players and TVs? Some may use high end power cord on bluray players for audio, perhaps they could comment

I was experimenting with a high end CRT monitor and the power cord does indeed influence the picture, though since CRTs naturally have a soft image most of the benefits of the better cord are probably lost, conversely since CRTs are purely analogue devices and draw more power than LCDs they would benefit more than an LCD I assume.

a 4K LCD and 4k bluray would be a good way to test this.
suix6
williewonka
3,070 posts
 
I put a better power cable on my 50" LCD tv and I did not notice any difference - then my wife came home and asked me what had I done to the TV - she thought it looked more vibrant and colourful.

She didn't hear the improvement in the Audio system, but saw the improvement on the TV.

Go figure :-)
stringreen's avatar
stringreen
6,370 posts
 
I experienced a better tv picture with an "audiophile approved" power cord to the TV
nonoise's avatar
nonoise
10,572 posts
 
One can't argue with what one sees. That's one blessing that detractors have no influence on. With my old Samsung Plasma TV, I tried a Zu Mission PC that I had laying around and the black levels went deeper with more gradations and subtlety in the details. You could make out more image detail in the darkest of settings. 

PLUGE levels (greyscale) were much easier to discern and moire patterns were lessened a bit as well. 

All colors took on more saturation and intensity, contrast was more apparent and brightness levels increased some. It was like the TV was starving for more power.

All the best,
Nonoise
inna
7,132 posts
 
Don't know about TV sets but I put $13 14 gauge shielded power cord on the computer and couldn't believe my eyes - everything looked so much better on the monitor. Sound from the computer was also better. Then I put second power cord on the monitor - no difference. Then I compared $150 audiophile power cord and that $13 power cord - no difference, but my computer monitor is probably 15 years old. More than enough for me, though.
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