Originally Posted by killayaw
My mistake for not clarifying the issues. Hope this helps.
If your TV was like this out of the box, it sounds like there is definitely a defect. The black level problem forum is dealing with users experiencing a rise in black level somewhere between 200 and 500 hours, so yours seems to be a different problem altogether.
If the set was purchased direct from Amazon, they should allow you to return it for credit or exchange (they have in the past). Otherwise, you should contact Panasonic customer support as early as possible to report the problem.
Your problem is not related to the THX fix as this has nothing to do with THX. The THX fix should only have a corrected green drive to allow your reds to appear correct. That was the problem with the THX on both G10 and V10 prior to about mid July. Firmware 1.20 and 1.24 both had a corrected THX mode, but that did nothing to change the black levels or overall brightness under THX.
I use THX for Blu-Ray, Custom settings for OTA and Cable. On both, my V10 with about 1300 hours still shows very dark for blacks. When new, the blacks were not as deep as sub-black on a test disk but were marginally lighter than the surround outside the picture area. This was considerably darker than the three year old Panasonic that was still in service right next to it at the time. Not Kuro black or as black as the professional LCD I am typing this on. But I also know that no commercial TV that I have seen (including Kuros) will match the level of a professional monitor since the color range is greater on the monitor. Of course, if I turn my head on the LCD, the blacks turn to gray.
When using a test disk, can you see all of the black bars and do they look black? Really doesn't matter. If everything is gray, then a trained technician should be able to identify it and have the correct board, panel, or entire set replaced.