Philips 27HT4000D 用户手册

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Check this list of symptoms and suggested steps to take before requesting service.  You may be able to solve the problem 
yourself.  Note : Please become familiar with the commercial features as described in TV installation / Setup because the 
effects of several of these features, if not thoroughly understood might appear as faulty operation. 

TV does not 
respond to 
commands 
(volume, channel, 
power), or cannot 
be turned on (if it 
is off). Or cannot 
be turned off (if TV 
is on).

1. Check commercial TV setup (TV installation / setup) menu, including power forced on, front 

keypad lockout, channel ring, volume minimum / maximum features.

TV turns off by 
itself.

1. TV automatically turns off after approximately 5 minutes when no RF signal is present (unless 

POWER ON = FORCED).

2. Check Energy Saving Programmability setting (see ESP) in TV installation / setup.

No Picture

1.  Check that the antenna / cable is connected properly at the rear of the TV.

2.  Check CABLE TUNING setting (NO / YES).

3.  Possible TV station problem. Try another channel.

There is picture 
but no sound.

1.  Try increasing the volume.

2. Check that the sound is not muted.  If it is, press the MUTE button on the remote control to  

restore sound. 

Uneven color 

display.

1. Switch off the TV using the mains power button.  Wait approximately 20 minutes before turning 

on the TV again.

2.  Ensure that the TV is not placed near any speakers or magnetic objects.

Double image / 
"ghost" image

Check antenna, cable or set-top box.

Snowy / noisy 
picture

1.  Check antenna, cable and / or setup box connections. Ensure that they are properly connected.

2.  Possible electrical interference from appliances or other sources.  

No power

Ensure that the TV's AC power cord is plugged into the main socket.  If there is still no power, dis-
connect the plug.  Wait for 60 seconds and re-attach plug. Turn on the TV again.

TV does not 
respond to remote 
control

1. Check batteries.

2.  Aim remote control directly at remote control sensor lens on TV and try pressing any button 

on the remote control.

There is sound but 
poor or no picture

Check picture adjustments (brightness, contrast, color, tint).