A friend gave me a Dell Optiplex 7020 SFF to mess around with, and it's exhibiting a strange problem: there's a piezo buzzer on the motherboard that is beeping steadily and faintly when the machine is sleeping. It's almost inaudible, in fact, and I was ready to chalk it up to coil whine from the PSU. I replaced the PSU though, and it continued doing the same thing. Using a rubber tube to my ear, I tracked it down to this piezo buzzer that, I assume, is responsible for beeping out BIOS error codes on startup. It's almost funny: the word "BEEP" is silkscreened onto the mobo next to it...and that's exactly what it's doing! It's so faint it sounds like a truck backing up three blocks away (originally, in fact, I thought it was coming from outside of my house!). It only does it when the machine is sleeping, exactly in time with the flashing power light; anytime the power light flashes off, the beeper beeps.
Any ideas as to what I can do about it, short of packing sound deadening foam around it, which I may do, anyway?
Any ideas as to what I can do about it, short of packing sound deadening foam around it, which I may do, anyway?