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Troubleshooting:
Look through the chart below listing some possible problems and the corresponding causes you may
confront in daily use of this unit before requesting service. Some simple checks or minor adjustment of
the unit on your part may help resolve the problems. If the serious failures arise, please hand it over to
a professional technician.
Since some critical ICs of this unit are apt to fall victim of high electrostatic voltage, any protective
measures against static shock are vital when examination and repair is under way.
Troubles
No power
Can not scan
program
No picture
No color
Image distortion at
channel shift
The remote control
fails to work
Sound and subtitle
language doesn't
match.
No sound at all
No sound by chance
Serious distortion or
can not receive
signal normally
Bmt-76.p65
For reference only
Possible Causes
The power cord or the plug has not
been well connected
The antenna is not adjusted well
Use antenna incorrectly
Wrong parameter input
Video-out cord incorrectly
connected
The video-out mode of the unit is
different from the in-mode of the
monitor
Output cord connected incorrectly
The video output mode of the unit
doesn't match the video-in mode
of the monitor
normal
Batteries incorrectly installed
Batteries exhausted
Beyond the effective operation
range
The remote sensor is pointed to by
bright light
The sound track is wrong
The unit is set in mute state
Volume is set at a too low level
Cable connected incorrectly
There might be a short circuit
In mute state
Stay asleep
Too much interferential signal
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Suggested Solutions (for reference)
Plug the power cord into the outlet tightly and
turn on the power; if there is still no power, cut
off the power again, and try it again in 5-10
minutes.
Re-adjust the antenna or use an outdoor aerial
Use an antenna with 75 Ω impedance input
Input correct Frequency, Bandwidth parameter
Connect the output cord correctly; if still no
picture, the antenna might have been
damaged.
Reset the working mode of this unit or monitor
Connect the output cord correctly
Reset the working system of either unit
Re-install the battery correctly
Replace the battery
Operate within a normal range
Place the unit elsewhere for a change
Press the Audio button to switch the sound
track
Cancel the mute
Turn up the volume
Connect the cable correctly
Re-connect the sound-out cable, and reboot
the unit
Cancel the mute
Reboot the unit
Adapt the antenna to reduce interference.
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06-4-10, 19:34
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