were they powered speakers? (i bet).
If so then its highly likely that some bad 'deep-frying' went on.
reset SMC and recheck
- Shut down the computer.
- Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
- On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
- Release all the keys and the power button at the same time.
- Press the power button to turn on the computer.
if same make call for service to Apple
One last test, then make a call to Apple for service / diagnosis.
Information stored in NVRAM / PRAM includes:
- Speaker volume
- Shut down your Mac.
- Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
- Turn on the computer.
- Press and hold the Command-Option-P-R keys before the gray screen appears.
- Hold the keys down until the computer restarts and you hear the startup sound for the second time.
- Release the keys.
helps plenty. As per your above earlier comment,....dont start picking out hardware until youve had hardware diagnosis confirmation.
Apple diagnosis is free regardless of repair or not.
Make appt. with Apple for diagnostic / repair.
There may be an issue with the audio hardware.