14TROUBLE---SHOOTINGBefore calling for service, determine the symptoms and make a few simple checks as shown below. For service please contact your localPanasonic dealer quoting the model number and serial number (both are located at the rear of the TV).SymptomsChecksPicture Sound ChecksSnowy PictureorNoisy Soundor Aerial location direction or connectionorMultiple ImagesorNormal SoundAerial location, direction or connectionInterference Noisy Sound Electrical appliances, vehicles, fluorescent lightsNormal Picture Noisy or No Sound Volume level or sound mutedNo Picture No Sound Not plugged into A.C. outlet, not switched onpicture / sound controls set at minimum levelsNo Colour Normal Sound Colour controls set at minimum levelsScrambled Normal or Weak Sound Retune channel(s)GENERAL INFORMATIONSleep FeatureIf the set is not switched off when the TV station stops transmitting , it will automatically go to standby mode after 30 minutes. Thisfunction will not operate when in AV mode.Last Position MemoryCertain functions have a last position memory, i.e. the setting at the time of switch off will be the setting used when the receiver isswitched on again:Programme position Colour VolumeContrast Brightness StandbySharpness Status C---A---T---STV Games / Home ComputersExtended use of TV games or home computers with any television set can cause a permanent ‘shadow’ on the screen. This type ofirreversible picture tube damage can be limited by observing the following points :D Reduce the brightness and contrast levels to a minimum viewing level.D Do not operate the television set for a continuous period of time while using TV games or home computers.This type of picture tube damage is not an operating defect and as such is not covered by the Panasonic warranty.