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7. Troubleshooting and Maintenance
Problems
No output audio
POWER indicator doesn't
work, unit does not
respond to any operation
Static becomes stronger
when connecting the video
connectors
Output audio has
interference
Cannot control the device
by front panel buttons,
RS232 port or IR remote
If your problem persists after following the above troubleshooting steps, seek further
help from authorized dealer or our technical support.
Causes
No signal at input/ output
end
Failed cable connection
Broken unit
Failed power connection
Bad grounding
Broken unit
16
TL-A70-40W User Manual
Solutions
Check input/ output
connections
Change for another cable.
Send it to the dealer for
repair.
Make sure the power cord
connection is good
Check the grounding and
make sure it is connected
well.
Send it to the dealer for
repair.
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