Yamaha RX-V650 Bedienungsanleitung Seite 78

TROUBLESHOOTING
Problem
There is noise
interference from
digital or high-
frequency equipment,
or this unit.
The picture is
disturbed.
This unit suddenly
turns into the standby
mode.
Tuner
Problem
FM stereo reception is
noisy.
There is distortion, and
clear reception cannot
be obtained even with a
FM
good FM antenna.
The desired station
cannot be tuned in with
the automatic tuning
method.
Previously preset
stations can no longer
be tuned in.
The desired station
cannot be tuned in with
the automatic tuning
method.
AM There are continuous
crackling and hissing
noises.
There are buzzing and
whining noises.
76
Cause
This unit is too close to the digital or high-
frequency equipment.
The video source uses scrambled or
encoded signals to prevent dubbing.
The internal temperature becomes too
high and the overheat protection circuitry
has been activated.
Cause
The characteristics of FM stereo
broadcasts may cause this problem
when the transmitter is too far away or
the antenna input is poor.
There is multipath interference.
The signal is too weak.
This unit has been disconnected for a
long period.
The signal is weak or the antenna
connections are loose.
Noises result from lightning,
fluorescent lamps, motors, thermostats
and other electrical equipment.
A TV set is being used nearby.
Remedy
Move this unit further away from such equipment.
Wait about 1 hour for this unit to cool down and then
turn it back on.
Remedy
Check the antenna connections.
Try using a high-quality directional FM
antenna.
Use the manual tuning method.
Adjust the antenna position to eliminate
multipath interference.
Use a high-quality directional FM antenna.
Use the manual tuning method.
Preset the stations again.
Tighten the AM loop antenna connections
and orient it for best reception.
Use the manual tuning method.
Use an outdoor antenna and a ground wire.
This will help somewhat, but it is difficult to
eliminate all noise.
Move this unit away from the TV.
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