LG LED TV背后盖时不时有微小的声音发出，是正常吗?请各位大大帮忙解释。

luihanz

LG LED TV背后盖时不时有微小的声音发出，是正常吗?请各位大大帮忙解释。声音是很小声，要很靠近后面盖才可以听到，但一下两分钟这样，声音就消失了，LG说
明书有写到Electrical circuit humming/panel buzzing: A low level noise is generated from a high-speed switching circuit, which supplies a large amount of current to operate a product. It varies depending on the product. This generated sound does not affect the performance and reliability of the product.这属于正常吗？还是我自己太敏感，普通人应该不会发现，因为要很靠近后面盖才可以听到. 在前面看戏是听不到的，就算Mute也听不到。

tstsoundlight

只是在开电那一杀吧？