No picture/ No sound
Verify if the television is properly plugged
Verify if the television is properly supplied power
Verify if electricity is available.
Blank screen
Verify if correct signals are input
Press SOURCE button to change signal input to TV
input
Restart the television of power supply is interrupted
No sound
Press the MUTE button and verify that Mute mode is
active.
Switch to another channel to check whether the same
problem occurs.
Press the VOL+ button to see if the problem can be
solved.
Poor sound
Verify that the sound system is correct. Refer to the
user manual for instructions on how to adjust it.
No picture on some channel
Verify if correct channel is selected.
Adjust the antenna.
Make adjustments by Fine Tune and MANUAL Scan.
No color for some channel
program (black and white)
Verify that the same problem exists on other channels.
Check the picture and sound systems.
Refer to the relevant instructions in the manual to
adjust the colour.
Spots with some or all pictures
Verify if the antennal is correctly connected.
Verify if the antennal is in good condition.
Make fine adjustment of channel.
Television is not working
Disconnect the television from the power supply for
10 seconds, then reconnect the television. If the
problem persists, contact an authorised after-sales
service provider for technical assistance.
Television out of control
Disconnect the television from power supply and 10
seconds later, connect the television to the power
supply. If the problem still exists, contact authorized
after-sales service for technical assistance.
Service Manual
Model
Model
Model
Model No.:
No.:
No.:
No.: 75UF5550
75UF5550
75UF5550
75UF5550
Chapter
Chapter
Chapter
Chapter 9.
9.
9.
9. Trouble
Trouble
Trouble
Trouble shooting
shooting
shooting
shooting
9-1.
9-1.
9-1.
9-1. Simple
Simple
Simple
Simple check
check
check
check
35
35
35
35
