SONIQ QSL402XT - Manual (Page 28)

Troubleshooting and advice
Should your unit develop a problem, please refer to the below troubleshooting table before
requesting assistance.
Control
Troubleshooting
No signal
No color shades
Stain show on the
screen.
Double or multiple
display image
Snow on the screen
The remote control
does not work
"Zip" noise on
coming from TV
No sound
Please check that all cables are correctly plugged in.
Adjust the contrast, color and brightness
Maybe result from a lighting signal from car, motor, neon light and
other electrical devices or appliances.
Maybe the result of an electrical wave disturb from other TV,
Computer and Game machine or Radio
The cables of the antenna are not correctly plugged in.
Please check the polarity of the batteries.Check that the receiver
of the remote control is not sheltered by something.
Even if the display image is correct, the noise may come from an
unsteady fixation of the panel.
Make sure that you have not press the MUTE button on the panel
or on the remote control.
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Troubleshooting and advice