41
tube·amp·company
SEARCH FOR ERRORS
Symptom
Possible Cause
Countermeasure
No audio playback
on one channel
The source equipment is giving signal on only
one channel.
One of the signal cables between audio sour-
ce and amplifier inputs has not yet been
plugged in or is defective.
One of the speaker cables is not correctly
connected to the amplifier or is defective.
A malfunction has occurred on one or several
tubes.
Check the audio source. You can try to use it
at a different amplifier for a test.
Check the cable connections, tighten them if
necessary.
Check and refasten the speaker cables at the
speaker terminal of the amplifier and at the
speaker’s connectors.
Have the tubes of the amplifier checked by
your dealer.
Poor sound quality
The cable connections are not tight, the con-
nectors are dirty or a cable is defective.
A record player has been connected to a line
level input without using a phono preamplifier.
The tubes have already been operating for a
number of hours greater than their life span.
Check the cables and cable connections.
Interconnect a phono preamplifier.
Have the tubes of the amplifier checked by
your dealer.
The remote control
cannot perform any
functions
No batteries inserted in the remote control, bat-
teries are not inserted correctly or are depleted.
The line-of-sight between the remote control and
the unit is obstructed, the range was exceeded
or the hand unit was operated from a position
too far to one side.
The unit is not switched on.
Check and replace the batteries if necessary.
Try to point the remote control at the front of
the unit only when the sight-line is clear, wit-
hin a 7-metre distance and, if possible,
facing the unit.
Switch on the unit.
Humming low fre-
quency noise is
audible, even as no
audio source is
playing back
See section “Net frequency noise”
in the chapter “Tips”.
See section “Net frequency noise”
in the chapter “Tips”.
