Since were talking about main living room TV's, I would say I replace it about every 5 years give or take a few. In 30 years I went from a Sharp 26" console, to a Motorola 45" RP TV that I replaced with a home built RPTV built into the wall of my living room using a Sony 3 tube HD projector (MSRP of $19000 that I bought used out of Boston College for a $1000, it was still working great when I threw it out a few years ago) with a 90" screen. Around 2002 replaced the projector with a HP DLP projector. Because of expensive bulb replacement on the DLP we replaced the home built RPTV with a Mitsubishi 62" RPTV, a few years latter that had too many problems and was replaced with a 60" Mitsubishi RPTV that was running great when I sold it this year replacing it with a 60" Panasonic ST60 only because it was the last chance to buy a plasma other wise I would have keep the Mits. The projectors were retired to my HT and I am on my fifth one now but that's another subject. Note non of them were replaced because they died and were sold or repurposed some were else.
"Smart enough to know better, to old to care" ------ Dedicated Home Theater, Mitsubishi HC7900DW Projector, 110" 16:9 Jamestown screen with variable power masking for CIW 2.50:1 to 16:9, Marantz 7009 with 7.1.4 Atmos with Ohm mains,3 DIY Subs (2 15" (1 ported, 1 sealed and a 12" 4th order bandpass), 1 DIY butt kicker, Custom Built HTPC, 10TB DroboFS NAS
Last edited by rekbones; 08-22-2014 at 06:21 AM.