Diesel Data: Automotive Repair

Effects of Electromagnetic Interference (EMI) on the Video SYS

Almost all electric or electronic devices radiate energy in the form of radio waves, also known as EMI. EM can be produced from such thing as common residential TV antennas, personal hair dryers, microwave ovens, utility power lines, and cellular phones (and other communication devices) in passing vehicles.

Not all devices produce the same level of EM radiation - some very weak, some very strong. However, under the right circumstances, some devices may emit enough EMI that it affects the video entertainment system. However, in some cases EM may not only cause objectionable video distortion, but may turn off the Video Cassette Player (VCP). When this happens, simply turn on the VCP and resume playing. If the problem persists, check your surroundings for possible EMI sources, such as utility power lines. Wait until the vehicle is clear of the source and try it again.