43FAQs, etc.Frequently Asked QuestionsMaintenanceIf there is a problem with your TV please refer to the table below to determine the symptoms, then carry out thesuggested check. If this does not solve the problem, please contact your local Panasonic dealer, quoting the modelnumber and serial number (both found on the rear of the TV).Symptoms ChecksPicture SoundNoisy SoundSnowy PictureNormal SoundMultiple ImagesNoisy SoundInterferenceNo SoundNormal PictureNo SoundNo PictureNormal SoundNo colorWeak or No SoundPoor or Distorted PictureWeak, Wrong or No SoundNormal PictureCannot operate with the remote control.There may be red spots, blue spots,green spots and black spots on thescreen.The main unit is hot.• Antenna location, direction or connection.• Antenna location, direction or connection.• Electrical appliances.Cars / Motorcycles.Fluorescent lights.• Volume level.Sound mute switched on.STEREO/SAP/MONO• TV set to AV mode.Not plugged into wall outlet.Not switched on.Picture / Sound controls set at minimum levels.• Color controls set at minimum levels.Weak signal.• Retune Channel (s).• Sound reception may have deteriorated.Set STEREO/SAP/MONO setting to SAP or MONO until reception improved.• The battery/ies is/are exhausted.The batteries’ polarity is wrong.The remote control sensor is exposed to strong light from a fluorescentlamp, etc.• This is a characteristic of liquid crystal panels and is not a problem. Theliquid crystal panel is built with very high precision technology giving youfine picture details. Occasionally, a few non-active pixels may appear on thescreen as fixed points of red, blue, green, or black.Please note this does not affect the performance of your LCD.• The main unit radiates heat and some of the parts may become hot. This isnot a problem for performance or quality.Set up in a location with good ventilation.Do not cover the ventilation holes of the TV with a tablecloth, etc., and donot place on top of other equipment.“Control with HDMI”function does not work • Switch the TV unit on again with the equipment on.• Set “Control with HDMI” to “Off”, then set to “On” again. (p. 21)