If there are hum bars or wiggles in the picture and/or hum in the sound, see
the section: Reduced width picture and/or hum bars in
picture and/or hum in sound.
|NotTaR of Television Sets : Insufficient width (without hum bars)
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.
<< Horizontal lock lost |
| Vertical lock lost >>
If both width and height are affected, the cause is likely something common:
low, low voltage power supply voltages or excessive high voltage (resulting
in a 'stiffer' beam).
(From: Jerry G. (email@example.com).)
Lack of width is usually caused by defective power supply, low horizontal
drive to the yoke and flyback, defective circuits in the pincushioning
amplifier section, excessive high-voltage caused by defective voltage
regulation, and or excessive loading on the secondary side of the flyback.