Panasonic TX-28PL4 manual Troubleshooting, Symptoms Checks, Sound

TROUBLESHOOTING
Symptoms		Checks
Picture	Sound
		Aerial location, direction or connection
Snowy Picture	Noisy Sound
		Aerial location, direction or connection
Multiple Images	Normal Sound
		Electrical appliances
		Cars / Motorcycles
		Fluorescent lights
		Switch on P---NR in Picture menu to reduce
Interference	Noisy Sound	picture noise.
		Volume level
		Sound mute switched on
Normal Picture	No Sound
		TV set to AV mode
		Not plugged into A.C. outlet
		Not switched on
		Picture / Sound controls set at minimum levels
No Picture	No Sound	Check if in standby mode
		Colour controls set at minimum levels
No Colour	Normal Sound
		Retune Channel(s)
Poor or Distorted Picture	Weak or No Sound
		Magnetic Interference from unshielded equipment
		Receiver moved while switched ON, switch TV off for
		30 minutes.
		If picture is also tilted, use Geomagnetic Correction
Coloured Patches	Normal Sound	feature (see Quick Start Guide, page 13)
		Sound reception may have deteriorated.
		Switch NICAM setting (Sound menu) to Off until
		reception improves.
Normal Picture	Weak or distorted sound

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