Panasonic Viera TH-40C400A Operating Instructions Manual

Troubleshooting20TroubleshootingBefore requesting service or assistance, please followthese simple guides to resolve the problem.If an error message appears, follow the message’sinstructions.If the problem still persists, please contact your localPanasonic dealer for assistance.ScreenRed, blue, green or black spots on thescreen. This is the characteristic of liquid crystal panels. Theliquid crystal panel is built with very high precisiontechnology. Occasionally, a few non-active pixelsmay appear on the screen as points of red, green,blue or black. This does not affect the performanceof your TV and it is not a quality problem.Chaotic image, noisy. Set [P-NR] in the [Picture] menu to remove noise(p. 13). Check nearby electrical products (car, motorcycle,fluorescent lamp).No image is displayed. Check the settings of [Contrast], [Brightness] or[Colour] in the [Picture] menu (p. 13). Check the TV is in AV mode. If the TV is in AV mode,check the selected input mode match the output ofthe external equipment (p. 10).Blurry or distorted image.(No sound or low volume.) Reset channels. (p. 16)Unusual image is displayed. Turn the TV off with Mains power On / Off switch(p. 9), then turn it on again. If the problempersists, initialise all settings. [ShippingCondition] (p. 16)Pictures from equipment connected viaHDMI are unusual. Check the HDMI cable is connected properly. Turn the TV and equipment off, then turn them onagain. Check an input signal from the equipment (p. 19). Use equipment compliant with EIA/CEA-861/861D.SoundNo sound is produced. Check the sound mute setting (p. 9) and volume.Low level or distorted sound. Sound signal reception may be deteriorated.Sound output via HDMI connection isunusual. Set the sound setting of the connected equipment to“2ch L.PCM”. Check the [HDMI 1/2 Input(HDMI)] setting in the[Sound] menu (p. 14). If digital sound connection has a problem, selectanalogue sound connection (p. 19).GeneralThe TV goes into Standby mode. This TV is equipped with auto power standbyfunction (p. 18).The remote control does not work or isintermittent. Replace the batteries (p. 5). Point the remote control directly at the remotecontrol signal receiver of the TV (within about 7 mand 30 degree angle). Situate the TV away from sunshine or block sourcesof bright light from shining on the remote controlsignal receiver of the TV.Parts of the TV become hot. Even if the temperature of parts of the front, top andrear panels has risen, these temperature rises donot cause any problems in terms of performance orquality.The TV panel moves slightly when it ispushed with a finger.Clattered sound might be heard. There is some flexibility around the panel to preventdamage. This is not a malfunction.Overcurrent error message appears. The connected USB device might cause this error.Remove the device and turn the TV off with Mainspower On / Off switch, then turn it on again. Check foreign objects are not inside the USB port.