Philips 42PF7421 Flat Panel Television User Manual


 
23
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
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 to fine tune your picture (see to page 9).
noise)
• Wrong TV system
Have you chosen the right TV system? (see to page
9).
No picture • Faulty aerial and cable Check whether 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 (see to page 9).
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.
• Headphone is connected • Disconnect headphone connection (only for 32”
model).
Sound interference • Electrical appliances • Try switching off any electrical appliances, for
interference example, hairdryer, vacuum cleaner that are in use.
TV not responding
Wrong placement of
Check the placement of the batteries.
to remote control
batteries
• Flat batteries • Try changing the batteries.
• Aim remote control directly at sensor on front of TV
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 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