Changhong Electric TM201F7U - Manual (Page 20)

PAGE 18
Before calling a technician, please check the following table to see if the below
mentioned symptoms can be diagnosed and fixed.
Symptoms Possible Reasons Correction
No picture, no sound,
and no indicator light on
1.The power adapter is not plugged
in
2.The power is off
1.Plug the power adapter in
2.Turn the power on
No picture, no sound,
but the yellow light
indicator
Functions of On Time have been set
Press【 】to turn on the TV
Picture and sound with
abnormity
1.Contrast, sharpness, and color are
set improperly
2.Color system is set improperly
3.Sound system is set improperly
1.Adjust the value of Contrast,
sharpness, and color
2.Set the Color system to the country
broadcasting standard
3.Set the Sound system to the country
broadcasting standard
Picture is spotted or with
snow
Signal source is low-grade ;
The signal is in a lower quality;
No signal input
Use the qualified signal cord
Input the signal
Blue background in AV
mode
No Video signal or the signal cord is
improperly/not connected
Connect the signal cord properly
Picture is unclear, or
moves or have black
stripes on horizontal
position in PC mode
Picture is not well adjusted
Adjust automatically by selecting Auto
Adjust or adjust Clock 、 Phase、H
Position and V Position manually after
enter into the PC Setup menu to solve
this problem
PC Picture is not in the
middle of the screen
Picture is not well adjusted
Adjust pictures automatically by
resetting H Position、V Position、
Phase and Clock
No sound
No Audio signal or the signal cord is
improperly/not connected
1.Connect the audio signal cord
properly
2.Set the sound system properly
The remote control does
not work
Batteries are improperly installed or
exhausted
1.Make sure the positive and the
negative polarities are correct.
2.Check if there is loose contact
between the springs and the
batteries.
3.Replace the batteries
TROUBLESHOOTING