Originally Posted by tkazar
I just bought the 5020 kuro. I live in montreal and could not find a new box. I had to settle with the display unit with a 5 year warranty it had no Burn in or IR. I have a couple of questions:
1) My panel buzzes and it is high pitched. I understand that this is normal but I think mine is above normal. I read the 9G thread on the buzz. My noise is from the power supply. Has anyone managed to get it replaced under warranty. The store is sending me a technician to check the noise.
I've never heard the typical buzz
described as "high pitched". You may have another issue.
2) My blacks are not really blacks. When there is no light in the room, I can see the black bars on an HD cable movie. It is not hard at all. However when I put a backlight i have to concentrate to see the bars but I still see them. My movie mode makes the black look less black than the optimum mode. (perception plays a role)
Have you simply tried adjusting contrast and brightness?
The type of bars you see depends on the settings. (Going from memory), there are two different Side Mask (bars) detection modes, and it can be off or on, or set to Auto Size-Natural. Mode 1 makes the bars black all the time. Mode 2 is dynamic and detects black bars, and according to program material shows side mask illustrations where available. Then it can also be set to Fixed or Auto. Auto is dynamic and changes the Side Mask brightness according to program content.
It "should" be set to On, Natural, Auto, and Mode 2 because these settings give the screen phosphors/pixels dynamic content, whereas if they are black all the time can cause BI (burn in) around them. You can also eliminate them entirely by using the Wide modes, although that will screw up the aspect ratio of what you're watching. See section 4:3 on pages 59 & 60 in the manual for details.
Each AV mode has a different color temperature setting, and different default contrast and brightness settings (which you can change). So, the side bars could look different in each AV mode.
In the menu, I can also clearly see the plasma emitting light (nearly dark room). I attached an image. The camera usually darkens the black. In real life the difference is more pronounced. Could my set have abnormal blacks? If I calibrate professionally the Tv can the black level be changed?
Thank you very much.
Even with my monitor's brightness all the way up all I see is solid black all around the HMG menu. I had to paste the image into IrfanView and crank the gamma up to 4 before I could even see the screen area. A photo is of course going to expose for bright areas, not dark. I don't know if you're talking about plasma leakage or something else. Many have said they can see leakage around the bottom of the screen. I'm not near mine now, but I seem to remember the background of the HMG not being totally black, but some kind of very dark gray and "textured dark gray" in some areas which is normal.
Professional or DIY, calibration is mostly grayscale. If your GS is rather off, it may be possible that adjustment could alter the black levels. (I'm not sure about that area).