after dta upgrade, Panasonic plasma tv will not hold screen size after power off - XF

#1
After a dta upgrade/replacement my Panasonic 55" Plasma will not maintain screen size adjustment. Keepsdefaulting to 4:3 screen with side bars after powering TV off, then back on..


This question, "after dta upgrade, Panasonic plasma tv will not hold screen size after power off," is about XFinity-Comcast TV television equipment.

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