Originally Posted by TalkingRat
The7 year life expectancy was based on research the NTIA did prior to establishing the program. It's been about 18 months since I read the report. But they did base their coupon calculations on the assumption of seven (7) years -- how long people keep a TV before replacing it.
The original study (that all the lifespan estimates seem to be based upon) was done around 2000 - 2002. The results were that the average person buys
a TV every 7 years. It was a very simple checkout survey done at big-box stores. I saw the results in trade magazines at the time. It did not specify the size, purpose, or intended location of the purchased set. It did not distinguish between adding or replacing a TV.
The "Industry" and Government (mis) interpreted the results to say that the average person replaces
their TV every 7 years. That is not a correct statement from the raw results. The NTIA surveyed those Dealers and Manufacturers, not technicians or servicers (or even recycling centers). My Congressmen specifically rejected my efforts to comment on the NTIA study. (I have been a factory trained servicer for 35+ years) The NTIA did not do a purchase survey, they used the Dealer's and Manufacturer's statements, which were based on a false interpretation of the big-box survey.
Now, as "johnpost" point out, modern TVs do have a 5-6 year life expectancy. This applies to HD-Ready and HD sets generally built after 2004, although some HD-Ready products from the 1999-2003 era aslo have a very short life. This is due to construction methods and component selection for the digital circuitry boards. The panel may last 100,000 hours, but the power supply won't, nor will the scaling circuit and new circuit boards become unavailable after about 2 years.