Dynex DX-42E250A12 User Manual (English) - Page 33

Troubleshooting DX-42E250A12 29 Troubleshooting Warning Do not try to repair your TV yourself. Contact authorized service personnel. Video and audio Problem Solution Picture does not fill the screen. There are black bars around the picture. No picture (screen is not lit) and no sound. Dark, poor, or no picture (screen is lit), but sound is good. No color, dark picture, or color is not correct. • Change the aspect ratio. An increasing amount of digital TV and movies are presented in wide screen (16:9). See "Adjusting the TV picture" on page 17. • Press on the TV or the remote control. • Make sure that the video cables are connected securely to the back of your TV. • Adjust the contrast and brightness. See "Adjusting the TV picture" on page 17. • Make sure that the power cord is plugged in. • Make sure that the correct video input source is selected. See "Selecting the video input source" on page 16. • Try another channel. The station may be experiencing problems. • Make sure that the incoming signal is compatible. • Make sure the antenna or cable TV is connected correctly and securely. See "Connecting a cable or satellite box" on page 8 or "Connecting an antenna or cable TV (no box)" on page 10. • Check the closed caption settings. Some TEXT modes can block the screen. • Try another channel. The station may be experiencing problems. • Make sure that the antenna or cable TV is connected correctly and securely. See "Connecting a cable or satellite box" on page 8 or "Connecting an antenna or cable TV (no box)" on page 10. • Adjust the brightness. See "Adjusting the TV picture" on page 17. • Make sure that the correct picture mode is selected. See "Adjusting the TV picture" on page 17. • If you are using an antenna, the digital channel signal may be low. • If you are using an antenna and the signal strength is low, adjust the antenna or use a highly directional outdoor antenna or set-top antenna with a built-in amplifier. • Make sure that the video cables are connected securely to the back of your TV. • The video cable(s) you are using may be bad. Try a new set. • Try another channel. The station may be experiencing problems. • Adjust the color saturation. See "Adjusting the TV picture" on page 17. • Make sure that the video cables are connected correctly and securely to the back of your TV. • Make sure that the antenna or cable TV is connected correctly and securely. See "Connecting a cable or satellite box" on page 8 or "Connecting an antenna or cable TV (no box)" on page 10. • If you are using an antenna, the digital channel signal may be low. • If you are using an antenna and the signal strength is low, adjust the antenna or use a highly directional outdoor antenna or set-top antenna with a built-in amplifier. Problem Solution Only snow (noise) appears on the screen. • Try another channel. The station may be experiencing problems. • Make sure that the antenna or cable TV is connected correctly and securely. See "Connecting a cable or satellite box" on page 8 or "Connecting an antenna or cable TV (no box)" on page 10. • If you are using an antenna, the digital channel signal may be low. • If you are using an antenna and the signal strength is low, adjust the antenna or use a highly directional outdoor antenna or set-top antenna with a built-in amplifier. Dotted lines or stripes appear on the screen. • Make sure that the antenna or cable TV is connected correctly and securely. See "Connecting a cable or satellite box" on page 8 or "Connecting an antenna or cable TV (no box)" on page 10. • If you are using an antenna, the digital channel signal may be low. • If you are using an antenna and the signal strength is low, adjust the antenna or use a highly directional outdoor antenna or set-top antenna with a built-in amplifier. • Make sure that the video cables are connected securely to the back of your TV. • The video cable(s) you are using may be bad. Try a new set. • Other devices (for example, surround sound receiver, external speakers, fans, or hair dryers) may be interfering with your TV. Try turning off one device at a time to determine which device is causing interference. After you have determined which device is causing interference, move it further from the TV to eliminate the interference. Double images. • Use a highly directional outdoor antenna, cable TV, or satellite TV. The picture has a few bright or dark spots. • A few bright or dark spots on an LCD screen is normal. It does not affect the operation of this TV. Good picture, but no sound. • Increase the volume. • Make sure that the sound is not muted. • Unplug the headphones. • Make sure that the correct audio mode is selected. • Make sure that the audio cables are connected correctly and securely to the back of your TV. • Make sure that the antenna or cable TV is connected correctly and securely. See "Connecting a cable or satellite box" on page 8 or "Connecting an antenna or cable TV (no box)" on page 10. • If you are using an antenna, the digital channel signal may be low. • The audio cable(s) you are using may be bad. Try a new set. Picture quality is good on some channels and poor on others. Sound is good. • The problem may be caused by a poor or weak signal from the broadcaster or cable TV provider. • If you connect to cable or satellite TV without a set-top box and experience poor picture quality, you may need to install a set-top box to improve signal reception and picture quality. Contact your cable or satellite TV provider about upgrading to a set-top box.