Panasonic plasmas have been reported to be increasing in brightness after a certain period of use causing some users to complain, but the company says this is normal and will not be fixed.

A plasma experiment shows several problems that needed troubleshooting.

I'd reset the TV screen settings to default first, then choose Standard or "Cinema"/"Movie" as the picture mode before jumping to any conclusions.

Learn how to clean a TV screen with this expert advice for making LCD, LED, OLED and plasma screens sparkle. Plus, learn what not to do!

Plasma displays are bright and offer the clarity promised by digital television. The first plasma screen display was invented more than 30 years ago byDr. Donald Bitzer, now a professor atN.C. State.