Professional calibration on flat panel LCDs, can contribute to display device longevity when Contrast (White Level) is reduced and by default, heat is reduced. It is a simple yet misunderstood misnomer to say that one should choose LCD over Plasma because Plasma will inherit phosphor wear and "burn in". While it certainly could, and would if abused, LCD is not without its issues. Heat affects all electronics, and if an LCD flat panel is subjected to a prolonged static duty cycle (not within a viewing cycle of a single user's duration, but a "routine" such as the same channel with a banner as news or sports information channels utilize, say in a sports bar setting) then the transistors (more likely a surface mounted device) can fail prematurely.
In the ISF seminars we used to express the 100 hour rule as a means of ensuring the display in question was issue-free and likely to stay in service after a considerable amount of work was elicited. In a manner of speaking, it was felt that after a 100 hour period, any problem would manifest and be corrected or the unit exchanged. Depending on display type, it also represented a long enough duration for indigenous sections of the unit to initially "wear-in", whether it was CRT phosphor conditioning (or Plasma for that matter) or bulbs in lamp-based products to accumulate enough time to "season" and stabilize.
If you guessed that was a Carnac bit from the Best of CarsonDVD box set you wouldn’t be too far off…that’s available at Cost-Club as well. When it comes to a bargain for an HDTV using money that was hermetically sealed in a mayonnaise jar on your porch until the “time was right”, perhaps the feeling of being all-knowing and all-omniscient has you donning a massive, red velvet turban with adorning flowing cape. Once the domain of canned goods that, were they to fall on your foot, would wreak the same kind of damage as an Al McGinnis slap shot, savvy merchandising has propelled your local warehouse club into a formidable electronics powerhouse.
This winter has been a busy one for the TweakTV team. We have
calibrated more than a handful of Samsung, LG, Sony, Sharp and
Panasonic HDTV's
over the past month. It looks like the cold winter months is turning
us into some serious HDTV viewers. We are glad to help you all in need
with our personal, in home calibrations. As you may know, from these
professional calibrations we get FREE suggested settings for you. Here
are two highly requested Vizio's.
Depending on display type, it also represented a long enough duration for indigenous sections of the unit to initially "wear-in", whether it was CRT phosphor conditioning (or Plasma for that matter) or bulbs in lamp-based products to accumulate enough time to "season" and stabilize. 
If you guessed that was a Carnac bit from the Best of 
