mobius, it was my impression that Mits was using LED bulbs in their newer sets ???
The 61" Samsung i just sold was our main TV for approx 4 + years, but is developed the dreaded white dots. [16-18 of them]
It had the a LED bulb that i never had to replace.
It's case from the back outsiide looked just like a Mits... even down to the 3" or so peep covers on the slanted backsides...
It served us well.
Or were you talking about Mits converting over to the LED back or side lighting TV's with LCD screens, like all the other manufacturers have went to ?