Originally Posted by VA_DaveB
As I said earlier, this has now become an infinite black thread and should be closed. Regardless that you all think it's related, the focus of the thead is gone and therefore it's potential influence on getting Panasonic to fix the graying issue is now lost. Nobody should care about the infinite black since it was only a marketing gimic, it's the graying panel that matter.
As far as the focus on 'infinite black' by itself, I agree.
However, if there is a connection between an increase in no-signal plasma voltage excitation which results in higher no-signal black levels, then the loss of the 'infinite black' feature may be a way to present reproducible engineering evidence of a problem.
To put it another way: If the increase in black level is caused by an overly aggressive increase in voltage and if the circuit that senses signal voltage to control the 'infinite black' feature is at a point in the signal flow whereby that overly aggressive voltage also is sensed and defeats the feature, then a technical case can be made to link the two.
Too technical for this thread? Maybe.