Panasonic TH50PHW5UZ TH42PHW5UZ User Guide - Page 35

Troubleshooting Before you call for service, determine the symptoms and make a few simple checks as shown below. Picture Symptoms Sound Checks Interference Noisy Sound Electrical Appliances Cars/Motorcycles Fluorescent light Normal Picture No Picture No Sound No Sound Volume (Check whether the mute function has been activated on the remote control.) Not plugged into AC outlet Not switched on PICTURE and BRIGHTNESS/Volume setting (Check by pressing the power switch or stand-by button on the remote control.) No Picture Normal Sound If a signal with a non-applicable color system format, or frequency is input, only the input terminal indication is displayed. No Color Plasma Display panel Symptoms Normal Sound Color controls set at minimum level. (see page 28, 29) Color system (see page 33) Check Some parts of the screen do not light up The plasma display panel is manufactured using an extremely high level of precision technology, however, sometimes some parts of the screen may be missing picture elements or have luminous spots. This is not a malfunction. After-images appear Do not allow a still picture to be displayed for an extended period, as this can cause a permanent after-image to remain on the Plasma Display. Examples of still pictures include logos, video games, computer images, teletext and images displayed in 4:3 mode. Note: The permanent after-image on the Plasma Display resulting from fixed image use is not an operating defect and as such is not covered by the Warranty. This product is not designed to display fixed images for extended periods of time. Whirring sounds can be heard The display unit is fitted with a cooling fan to dissipate heat generated during normal from the display unit. use.The whirring sound is caused by rotation of the fan and is not a malfunction. 35