Power Amplifier · Marantz · CD-63

Diagnosis: Scratchy Controls

Moving a control creates crackling, dropouts, or intermittent sound.

Safe first checks

  1. Lower the volume before exercising controls.
  2. Identify the exact control: volume, balance, selector, tape monitor, or a switch.
  3. A proper cleaning requires the right cleaner and access to the control opening; do not spray randomly into the chassis.
  4. If a control feels loose, binds, or is physically damaged, stop forcing it.

Next step

Record which control causes the fault and whether sound returns when the control is held in a particular position.