HI,
I had VERY similar problem, 120 Hz predominant noise + ONLY when record playing. Turned out to be mechanically induced -- by vibration from the motor pod (physically separate) transmitted by the underlying shelf to the turntable/tonearm. Banished by a mousepad under the motor pod; recently replaced the mousepad by Herbie's thick Grungebuster dots.
Good luck,
Harvey
I had VERY similar problem, 120 Hz predominant noise + ONLY when record playing. Turned out to be mechanically induced -- by vibration from the motor pod (physically separate) transmitted by the underlying shelf to the turntable/tonearm. Banished by a mousepad under the motor pod; recently replaced the mousepad by Herbie's thick Grungebuster dots.
Good luck,
Harvey