Just a post to share my comments on the SV420/470M. I have auditioned and calibrated an SV420M and used it for over 250 hours over the last 3 weeks These two sets, overall, provide a very pleasing viewing experience. I agree with Post #345 and the settings with a couple of exceptions. Backlight is best at under 42 for best black levels, the lower the better. You can actually set the backlight to around 38 and then increase Brightness to 55 - 58 and usually get good detail with the added benefit of longer CCFL life and power usage.
According to some other users and websites, use the "Low" and "Precision" settings for the least viewing artifacts. I have found this to be true.
The good about these sets is the price/value ratio, very user friendly menus, and... at least in mine, the use of an LG LCD display panel. To find out what panel you have, with the TV powered up, hold down the lower 2 buttons on the left side of the TV, and then depress the remote "Menu" button pointed at the TV. A few "new" menu options will appear and be usable until the TV is powered off. One of these options labeled "Info" I believe, will display a host of data, one of them being the name and number of the panel. Just be careful not to change any other settings while in this "new" menu".
Lastly, although I like the set for all of the above, I am not keeping it as it suffers from yellow/green shift, but only seems apparent when using cable or off the air tuning through the provided ATSC tuner. I was able to calibrate and eliminate the yellow/green shift on the HDMI and component inputs yielding a very pleasing picture. What is "yellow/green shift" or tracking? Well, when say the gold or yellow in a football teams uniform is on the screen, instead of yellow or gold you get either something like a sickly
green or an almost florescent green/yellow.
This is not limited to this set. Next time you go to the "Big Box" store with the blue and yellow sign, take a look and most of the TVs on display. When yellow shows up on the screen. . .. there it is.. sickly green tones. Oh, and lest you think it can be "dialed out" during calibration.... most can't. This seems to be an industry wide issue that I rarely see mentioned. I'm guessing that many TV manufactures purchased the same or similar color decoder ( ATSC tuner mismatch?) design from China 3 or 4 years ago and now, here we are, with some color inaccuracies. It isn't a big issue if you can stand it. I just can't and the yellow/green mistracking and it seems to contribute to others subtle color changes in associated shades of blue and green.
But otherwise, the SV420/470M's are great sets! I've just gotten pretty picky over the years. ;
I am taking the set back and have since picked up an LG42LD550 which, so far, has very pleasing detail, color, and performance with no yellow green tracking problems.