Numerous tests show that the Panasonic UT50 series has a very low MLL in a dark room (comparable to the ST, GT, and VT series), yet my particular TC-P42UT50 cannot not get very dark at all on a black screen. Movies with dark space scenes look washed out and overall contrast suffers for general viewing.
My brother has a TC-P55GT50 which is supposed to have a similar MLL in a dark room and the black level on his set is much, much, darker, almost imperceptible, while mine is an obvious grey. I suspect that my set made it through quality control without proper MLL testing. And, yes, I've adjusted the set to ensure that absolutely no pixels are activated on a black screen using AVS HD 709. I can turn brightness down to zero and the screen does not get any darker.
I've scoured through the service menu and TC-P50UT50 service manual and have found no mention regarding how to adjust the black level, nor do I see any trimpots for making such an adjustment. Is there any way to adjust the black level on a 2012 Panasonic plasma? Would it be possible to either make adjustments in the service menu or perhaps install a potentiometer in the appropriate part of the panel's drive circuit in order to make such an adjustment? If not, would the black level be corrected if I replaced one of the boards (assuming the board is out of specification)?
Thanks!
My brother has a TC-P55GT50 which is supposed to have a similar MLL in a dark room and the black level on his set is much, much, darker, almost imperceptible, while mine is an obvious grey. I suspect that my set made it through quality control without proper MLL testing. And, yes, I've adjusted the set to ensure that absolutely no pixels are activated on a black screen using AVS HD 709. I can turn brightness down to zero and the screen does not get any darker.
I've scoured through the service menu and TC-P50UT50 service manual and have found no mention regarding how to adjust the black level, nor do I see any trimpots for making such an adjustment. Is there any way to adjust the black level on a 2012 Panasonic plasma? Would it be possible to either make adjustments in the service menu or perhaps install a potentiometer in the appropriate part of the panel's drive circuit in order to make such an adjustment? If not, would the black level be corrected if I replaced one of the boards (assuming the board is out of specification)?
Thanks!
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