Yamaha RX-V757 Manual De Instrucciones página 91

Problem
There is noise
This unit is too close to the digital or high-
interference from
frequency equipment.
digital or radio
frequency equipment,
or this unit.
The picture is
The video source uses scrambled or
disturbed. encoded signals to prevent dubbing.
There is noise when
The OSD may be disturbed when
the OSD is displayed. displaying OSD through component video
connections.
This unit suddenly
The internal temperature becomes too
turns into the standby high and the overheat protection circuitry
mode.
has been activated.
■ Tuner (With the exception of U.K. model)
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.
Cause
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.
Select OFF in CMPNT OSD.
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 the 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.
TROUBLESHOOTING
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89