LG flatron t910b making wierd noises

[blazer78]

it only happens for a few minutes right after i turn on the power, why is that?

 

[MichaelZ]

i got that too. my benq when ever in power saving mode or even power off, it makes a high pitched sound. i hae to unplug it so stop it doing it, so i got a powerboard with a master switch now. it works good.