Originally Posted by ChuckF.
There's a world of difference between 'OEM' which is a Sony lamp which might say Philips or perhaps Osram on it, and what the sellers call an 'OEM-equivalent' lamp. The term 'OEM-equivalent' is a matter of opinion. Most 'OEM-equivalents' are cheap Chinese knockoffs that might last three months.
Sellers do us no favors by playing games with these terms. Some of them sell both OEM and 'OEM-equivalent' and shade the difference between them. An OEM-equivalent will sell for around 70% of what a Philips will, yet it will only last 10-20% as long. Terrible economics.
Posts like this are not factually correct. Do NOT spread misinformation, please.
My original OEM Philips lamp -- made in China, by the way -- only lasted 39% of what is should. Only 3,121 hours, instead of the 8,000 promised. Where's my other 5,000 hours?
So, true OEM lamps can be crap too. My "OEM" replacement lamp, does not says Philips or Osram, but says Electrified
, has lasted much longer
than the Sony-supplied lamp that came in my TV.
I bought my TV in January 2008, replaced the bulb in October 2009
. That replacement bulb has now lasted longer than the original bulb (currently 4,112 vs 3,121). I just checked and the replacement bulb it has 4,112 hours and still looks great, while the entire display panel has 7,238 hours. So, the OEM equivalent I bought apparently EXCEEDED the standards of the original! When I installed it, I just re-tweaked the brightness/color settings for the different bulb, and it looks better than the original.
For those with calculators, yes there's always a discrepancy between "bulb hours" and "panel display" hours. 3121 hours (original bulb) + 4112 (replacement) = 7,233. Yet my panel display total is 7,238 hours.
Panel display hours are always more -- by a little bit. For an example, just look at the picture above. Bulb (lamp) hours are bottom right number. Panel hours are the number just to the left of that.
I'm not a technician, but it panel display hours seems to be counting from when you turn the TV on, while bulb hours seems to be when the bulb actually starts showing a picture. Over time, the difference adds up.
If you don't know how to check your bulb hours and panel display hours, go here. Has pics and easy instructions:http://www.avsforum.com/avs-vb/showp...ostcount=12822