Philips 7521D manual Troubleshooting Tips, Key on the remote control

Troubleshooting Tips

Below is a list of symptoms you may encounter with your TV. Before you call for service, make these simple checks.

Symptom	Possible Causes		What you should do
No display on screen	•	Faulty power supply	•	Check whether power cord is properly connected
	•	TV’s Power not turned		into the mains socket and to your TV. If there is still
		on		no power, disconnect plug. Wait for 60 seconds and
				re-insert plug. Switch on TV again.
			•	Press the	key on the remote control.
Poor reception	•	Faulty antenna connection	•	Check antenna connection at rear of TV.
(snowish picture and	•	Weak transmission	•	Try adjusting the direction of the antenna.
noise			•	Try manually adjusting your picture (refer to page 21).
	•	Wrong TV system	•	Have you chosen the right TV system? (refer to page 21).
No picture	•	Faulty aerial and cable	•	Check whether euroconnector cables or aerial
				sockets are properly connected.
	• Wrong source selected		•	Check whether the source is correctly selected.
				Press	button to enter Source list and select
				the correct source.
No sound on	• Wrong TV system		• Check whether the correct TV system is selected
certain channels				(refer to page 21).
No sound	• Zero volume level		• Try increasing volume.
	• Sound muted		• Check that the mute (			) mode is not on. If mute
				mode is on, press the		key to deactivate mute
				mode.
			• Aim remote control directly at sensor on front of TV.
	• Headphone is connected		• Disconnect headphone connection (only for 26”/32”).
Sound interference	• Electrical appliances		• Try switching off any electrical appliances, for
		interference		example, hairdryer, vacuum cleaner that are in use.
TV not responding	• Wrong polarity of batteries		• Check polarity of the batteries.
to remote control	• Flat batteries		• Try changing the batteries.
Occasional appearance	• Characteristic of liquid		• This symptom is not a problem. The liquid crystal
of red, blue, green		crystal panel		panel is built with very high precision technology
and black spots on				giving you the fine picture details. Occasionally, a few
screen				non-active pixels may appear on the screen as a fixed
				point of red, blue, green or black. Note that this
				does not affect the performance of the set.
Intermittent or	• * HDCP (see glossary)		• Noise is displayed if the connected digital equipment’s
flickering picture on		authentication failed		(DVD player or Set-Top box) *HDCP authentication
in HD mode				failed. Check user manual for the digital equipment
				you are connecting.
			• Use a standard HDMI to DVI cable.
No sound or picture but	• Set on standby mode		• Press the		key on the remote control.
front panel red light is
on
Changing from one	• Pay TV channels are		• This is normal behaviour and no action is required.
channel to another		encoded by the cable
channel takes a long		provider and takes a
time		longer time to decode.

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