Sytech SY-425HD, Instruction Manual, Page: 24 / 52

Troubleshooting
Picture is breaking
up
Problem Potential Reasons What to do
No picture
Power isn't connected
Connect the power
The power switch is not on Switch on the power
Screen shows
No Signal
DVB-T cable not connected Plug in the DVB-T cable
Aerial cable is faulty
Check aerial cable and
connections
No sound from
speaker No or incorrect connection
with audio cable Connect the audio cable
correctly
Sound on mute Turn off mute function
Only sound, no
image on the
screen No or incorrect connection
with AV cable Make sure cables are
connected correctly
The program is a radio
program Press <TV/RADIO> key to
shift into TV mode
Remote Control
is not responding
The battery is exhausted Change battery
Remote Control is not
facing or close enough
to the Set Top Box
Adjust the position of the
Remote Control and move
closer to the unit
The signal is too weak Check aerial cable and
connections
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