Panasonic Viera TH-P54S20A Operating Instructions Manual

55 TechnicalFAQsBefore requesting service or assistance, please follow these simple guides to resolve the problem.If the problem still persists, please contact your local Panasonic dealer for assistance.White spots or shadow images (noise)Check the position, direction, and● connection of the aerial.Neither image nor sound isproducedIs the TV in “AV mode”?● Is the mains lead plugged into the● socket outlet?Is the TV turned On?● Check Picture Menu (p. 24) and● volume.Check all required cables and● connections are firmly in place.An error message appearsFollow the message’s instructions.● If the problem persists, contact your● local Panasonic dealer.“VIERA Link” functiondoes not work and an errormessage appearsConfirm the connection.● Turn the connected equipment on and● then switch the TV on. (p. 44)Contrast is reducedContrast is lowered in the following conditions● without any user operation for a few minutes:• no signal in Digital TV mode or AV mode•selected invalid programme•selected radio service•displayed menu•Thumbnail or still picturePixel StatementAn image on a LCD or Plasma TV screen is created● by many small groups of dots known as pixels(which is similar to the image in a newspaper). Italso naturally follows that higher panel resolutionscontain more pixels. To create a colour image, eachpixel consists of three tiny coloured dots (knownas sub-pixels), one each of red, green and blue.Each one of these dots is precisely controlled bythe electronics of the TV to produce the picture.Whilst Panasonic maintains the highest standardsin manufacturing technology and processes in theconstruction of these panels, there are a numberof allowable pixel/subpixel failures that still allowthe panel to be defined as a good panel. It is notpossible to guarantee absolutely no pixel loss.MaintenanceFAQs