Sansui SR-636 - Specific Phenomena and Service; Howling and Induced Hum; Requesting Repairs

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Howling a
When an outside vibration is transmitted to a player in operation,
abnormal sounds such as buzzing or shrilling (Howling phenomenon) is
generated. Speakers should be separated from the player, and placed in
such a location as to avoid transmittal of any vibration.
Inducedhum |
If you install your turntable directly on, or to the left of an amplifier,
chances are that you may hear a booming hum, caused by the power
transformer of the amplifier. |f you notice such a hum, move the turn-
table away from the amplifier or relocate it on the right side of the
amplifier (i.e. the side away from the amp’s transformer) .
When requesting repairs
Unplug your amplifier from the wall AC outlet and call your dealer or
the nearest Sansui Authorized Service Station.