Here's the manual; http://www.manuals365.com/swf/panasonic/tc50pu54_adv.html Hope this helps.
SOURCE: model number tc-50pu54 panasonic plasma tv brightness fluctuates when live tv basketball game is on
Check and replace its Z-sustain board. Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" or "Flipcard" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. You can also click the [Home] tab to see the latest updates. It will make search easy. There are more than 1350 posts to different brand TVs now. Pull up older posts there.
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