Kamis, 13 Februari 2014

Which is better a 42" LCD HDTV or a 42" Plasma HDTV? Why is it better?

Q.

A. This question has been asked many times, so I've formulated my standard answer. Here it is:

Picture quality of plasma is brighter, better color, better blacks than LCD. (There is something about looking directly at glowing phosphors!)

Sharpness is the same for equivalent pixel counts. Some newer LCDs have 1080 x 1920 resolution, most plasmas still in the 720 x 1280 range.

Plasma is heavier and uses more power than flat panel LCD.

There are reports that plasmas are not as reliable or they don't last as long, but that is no longer true with the latest models. Plasma phosphors dim slowly over time (but nt as fast as CRT phosphors); but direct view LCDs use flourescent lamps which also dim and eventually burn out (some are replaceable). Projection LCD sets have bulbs of limited life, but are replaceable and the lifetime is a few thousand hours of viewing.

Plasmas are subject to burn-in. A stationary image left on the screen for a long time could produce a permanent ghost image. The most risk is when viewing a lot of 4:3 ratio pictures (non-HD), which are displayed with vertical dark areas on the left and right to fill in the wide screen. There are ways to minimize this, however. many sets have a "stretch" mode which widens the picture to fill the whole screen.

Plasmas come in largers sizes, although large flat panel LCDs are coming out, but they are expensive. LCD projectors can be 70".

LCD contrast and brightness can be reduced when viewing from off-center (both flat and projector, but sets will vary).


Vizio GV42L 42" HDTV LCD settings?
Q. I just bought a Vizio GV42L 42" LCD HDTV. Just a few questions:
1) what settings have you used for cable programming and/or movies, as I hear to get good picture you really need to tweak it right.
2) I have my comcast HD DTS box and progressive scan DVD player connected to the Vizio using component cables. When I'm watching an HD channel, it does look HD, and when I'm watching a DVD It does look much higher quality than typical analog cables..However, when I press the info button. It still says resolution coming it at only 480i. Should I be concerned and/or try using HDMI cables instead?
~Gavin Ng

A. I ran into this problem with my Samsung LCD.. the Cox Cable HD box wasn't automatically converting the signal to 1080i. You'll have to go into the settings of your cable box and manually switch it to 1080i... I ran through a setup process that it displays a bunch of screens and which ever one you can see it programs the box to use ...after that it automatically switched between the 1080i for the HD channels and lower 720/480 for the non HD channels.

Call your cable provider.. thats what i did to figure out the setup program.





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