Background in columns in Standby mode?

Question

Do it yourself

Как уже из заголовка ясно проблема заключается в фоне. частота 50-60Гц.
Видимо БП колонок с плохим фильтром, либо вовсе без него, либо наводка по массе от компьютера....
В общем я не специалист в этой области. Посдскажите что и как сделать.
Колонки Microlab FC360 5.1, подключены к компютеру.
В электропроводке в квартире земля на ноль.
У колонок нет заземления, стандартная двужильная вилка.

Answer 1

Is the speaker new or did the problem appear during operation? For the second option, the most common problem is dead capacitors in the power circuits.

In the electrical wiring in the apartment, ground to zero

I didn't understand. Do you simulate grounding by means of a neutral wire, or do you have a grounding input in your apartment and did you hang a neutral wire on it? If it's the first, then you can't. Your equipment cases may be energized. That's where leads can come from.

Answer 2

Alexander, and if the same garbage with a sound amplifier "tear" the sound, why does the sound sound hoarse? =(
Model Receiver Denon AVR-X520BT BL Digicinema Vol .
The player is 5 months old.