How to Troubleshoot a TV Picture
TVs are practically a ubiquity in the American home; and, due to technology advancements, TVs have improved in picture quality and become a part of everyday life. Even with high-end models, though, you can still get a less than ideal picture on your television--but troubleshooting it is pretty basic.
Check your connection. Your cable or antenna connection on the back of your television or at the wall may be loose, and this can easily provide a bad picture. Make sure the connection is completely on and that there are no tears in the cable. Replace the cables if they are torn or old.
Change the settings for color, shape and contrast. There will be a button on the television that will let you access the color, brightness, contrast and other settings, via a control panel. Go to a channel that typically comes in better than the rest and adjust the various settings on this channel. It's possible that one of the settings is far off from the default, and needs to be corrected by bringing it back to the original, or middle, setting.
Look on other televisions in your house to see if they are experiencing similar problems; this might indicate a problem with the cable or satellite provider or some other external issue that will require the help of a professional.
Check on and around your TV and look for any magnetic device that may cause problems or anything electronic that may cause interference.
Tips & Warnings
- A green screen may mean the tube has gone bad if you have a CRT TV.