NotTaR of Television Sets : Insufficient width (without hum bars)   
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Insufficient width (without hum bars)

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.

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. (jerryg@total.net).)

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.