Preamplifier · Yamaha · CA-1010

Diagnosis: Lights or Display Not Working

The unit otherwise operates, but lamps, meters, or the display do not work.

Safe first checks

  1. Confirm the dimmer or display switch is not set to off.
  2. Check the service documentation for lamp type before ordering replacements.
  3. Do not replace lamps with a different voltage or wattage.
  4. If several indicators failed together, treat it as a power-supply issue rather than a simple lamp issue.

Next step

Record exactly which lamps or display sections are out.