Originally Posted by atuccinardi
I'm a newbie obsessing about the 67a750. I have a samsung HLR5667W currently and think it's a good TV. I am seeing some comments regarding LED not being as good as a lamp, and a potential problem with the screen sagging? Not exactly sure what this means.
Can someone comment on LED vs lamp on this unit, and has the sag issue been addressed?
While I can't comment on the LED vs. Lamp issue, I can comment on the 'screen sag'. There was an issue with the 2007 Lamp based sets, and to a lesser degree the LED sets (I believe), where they would exhibit horizontal bowing. Imagine horizontal lines not being completely straight, but forming a smile at the edges. It is caused by less than rigid screens, and compounded by the case design on these models. In particular the Lamp based sets, HL-TXX76s.
They developed these "Ultra Slim" cases, which were 6-8" thinner depth wise compared to the previous versions. To achieve that, they changed the optic system and added another mirror in the top of the case, which would magnify any geometry problems. The case is also very, VERY flimsy. If the case was sturdy, I imagine the bowing problem would be much less severe, as it would support the screen. So to sumarize, we've got an additional mirror, a flimsy case, which is pushing down on a flimsy screen, causing it to bulge out causing the smiley face effect.
I've had the HL-T5076s since June '07, and above is what I understand is the problem. I haven't complained to Samsung yet, because I know they don't have a fix as this is an inherent design issue with the Ultra Slim cases. Some have gotten lucky after going through multiple replacements and gotten one with little to no bowing, but who wants to exchange their TV 4 times. The good news is that the '08 models no longer utilize this design, and have gone back to the previous slightly deeper cases. While we won't know for sure until the sets start trickling into stores and the first AVS'ers get them in house, it's a fairly good bet the 'screen sag' won't be an issue this year. If that's so, I'll be calling Samsung to complain until they give me a non bowing set. Hopefully this is helpful in explaining the geometry problems of last years televisions. Maybe someone else can discuss LED vs. Lamp.
BTW, aside from bowing, the PQ is outstanding!