High pitch Siren Like Sound From TV ?

Question

Hi i have a 65 inch Hitachi TV and this morning it made a siren like sound for about 20 seconds and then faded out into a high pitch sound.

It had woke me up like an alarm clock , the tv was off and i was'nt sure what was going on untill it done the same thing again about 10 minutes later.

I unpluged the tv,DVR and surround sound then pluged everything back in agin about an hour later, my Wife and i ca'nt hear a thing but my two GranDaughters are still saying they hear an annoying high pitch sound, my girles are ages 5 and 17.

I was told that a ground wire may have burrt off and may becauseing this sound.

Anyone have an ideas as to what is causeing this problem ?

I'm going to call a tv repairman after i get some answers from this post/

Thanx everyone and i will pick a best answer.

Answer 1

if u have a fm am tuner around it it might be that th\asts making the tv do that