Toshiba 50HP81 Owners Manual - Page 33

Troubleshooting Before you call for service, determine the symptoms and make a few simple checks as shown below. Picture Symptoms Sound Interference Noisy Sound Checks 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. Check PICTURE and BRIGHTNESS/ Volume setting by pushing the power switch or standby 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 Normal Sound Color controls set at minimum level. Color system (see page 28, 29) Plasma Display panel Symptoms Some parts of the screen do not light up Check 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. Ghost images appear Do not allow a still picture to be displayed for an extended period, as this can cause a permanent ghost image to remain on the Wide Plasma Display. Examples of still pictures include logos, video games, computer images, teletext and images displayed in 4:3 mode. Note: The permanent ghost 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 from the display unit. The display unit is fitted with a cooling fan to dissipate heat generated during normal use. The whirring sound is caused by rotation of the fan and is not a malfunction. 33