When a bright scene comes, the screen flashes and there is a lot
of noise in the sound. When a dark scene comes, there is no
flash or noise. Changing channel does not help. The noise
persists even when the sound is muted.
|NotTaR of Television Sets : Noise in picture and sound due to bright..
1994-2007, Samuel M. Goldwasser. All Rights Reserved. Reproduction of this document in whole or in part is permitted if both of the following conditions are satisfied: 1. This notice is included in its entirety at the beginning. 2. There is no charge except to cover the costs of copying.
I may be contacted via the Sci.Electronics.Repair FAQ (www.repairfaq.org) Email Links Page.
<< Channel tuning drifts as .. |
| Internal interference - s.. >>
(The following is from: Lattuca@Midwest.net (Sam Lattuca))
When the video detector level is adjusted too high, you will get noise in
the sound while screen contains a lot of white information (i.e. letters) but
won't when only dark scenes are present. The video level adjust is usually a
small coil normally located near the IF section. Since your set is several
years old, this wouldn't be uncommon. It can be adjusted while watching the
picture and listening to the sound.