37TroubleshootingIf a problem arises while you are using the TV, please read this "Troubleshooting" well beforeyou request having the TV repaired. You may be able to fix it easily by yourself. For example, ifthe AC plug is disconnected from the AC outlet, or the TV aerial has problems, you may thinkthere is a problem with the TV itself.Important:• This Troubleshooting guide only covers problems whose cause are not easy to determine.If a question arise when you are operating a function, read the page(s) corresponding tothe operation of the function well, not this Troubleshooting guide.• After you have followed the Troubleshooting description or the operating description of thefunctions concerned without any success, remove the AC plug from the AC outlet and re -quest a repair of your TV. Do not attempt to repair the TV by yourself or remove therearcover of the TV.If you cannot turn onthe TV• Is the AC plug connected to the ACoutlet?• Is the POWER lamp lit? If not, press theMain power button.No picture/No sound• Have you chosen a TV channel whosereception is extremely bad? In this case,the BLUE BACK function will be activat-ed, the entire screen becomes blue, andthe sound is muted. In spite of this, if youwant to view the TV channel, follow thedescription "BLUE BACK" on page 24 totry to change the BLUE BACK functionsetting to OFF.• Are your SOUND SYSTEM settings forthe TV channels correct?Forrow the description “SOUND SYSTEMButton” on page 12 to try to solve thetrouble.Poor picture• If noise totally obscures the picture (sn-ow), the aerial or aerial cable may havetrouble. Check the following to try tosolve the trouble :Has the TV and aerial beenconnected properly?Has the aerial cable been damaged?Is the aerial pointed to the right dir-ection?Is the aerial itself faulty?• If the TV or aerial receives interferencefrom the other devices, stripes or noisemay appear in the picture. Move suchdevice as an amplifier, personal compu-ter, or a hair drier that can cause inter-ference away from your TV, or try chan-ging its location. If the aerial suffers int-erference from a radio tower or high-voltage wire, please contact your localdealer.• If the TV receives interferences fromsignal reflecting from mountains orbuilding, double-pictures(ghosting) willoccur.Try to change the aerial’s direction orreplace the antenna with the one withbetter directionality.