Why does my Sony Trinitron CPD-E530 hum when turned on?
- JJohn WoodSep 12, 2025
If you hear a hum right after turning on your Sony Monitor, this is the sound of the auto-degauss cycle, which automatically runs for a few seconds when the power is turned on. If a second degauss cycle is needed, allow a minimum interval of 20 minutes for the best result.





