High pitch noise from ace 250

[Dang]

:?: Just noticed this morning a faint high pitch noise coming from the control box on my ace 250. I can barley hear it. But now that I know it's there its really bugging me! I wonder if I should be concerned about this. Seems to work okay still.
if you guys would be so kind to just put your ear(s) on the box next time you have it on and tell me if you have that noise or not. :?:

 

[saika/ace250]

Mine does too, I am sure that it is supposed to be there....I know what you mean, but it isn't in the audio signal so headphones keep it out. I wonder if it is part of the display circuitry?

 

[chrisaller4470]

I have the same sound from mine, and the wifes ACE 150 does it also. Worry not my friend it's normal! I'm not concerned about it on mine, besides you have to really listen to hear it.

 

[Uncle Willy]

That's the noise it makes when it is thinking. HAAA.


Bill