How do I turn mute off my imac? - Apple iMac Z0GF0005F Desktop

You should check the sound interface on your computer. It could be that the line in is muted or set to low.

It may be a certain mode that the iMac is running in. Here's a link telling you one way of solving the problem:

iMac Fans run at full speed after computer turns on

It may have shut down due to overheating. Here is a link with some solutions:

http://www.macworld.co.uk/how-to/mac/how-fix-overheating-imac-imac-overheating-tips-advice-3462816/

saya lupa kode keamanaan nokia 3600.
IME 352939024997911

Go to your system preferences,
the sound control panel.
Make sure the internal speakers are selected there and that it is not muted or turned down there.

Thank you for contacting Fixya Support, I am glad to assist.

There are a few steps you can try to troubleshoot this issue:

Try a PMU Reset:
* Turn of your iMac if it is already turned off
* Disconnect all connections to the iMac except the power cord
* Now disconnect the power cord for approximately 20 seconds
* Reconnect just the power cable the keyboard, mouse and power cord, and then power your iMac G5 up.

* Check to see if the iMac boots up normally without power interruption.

* If the iMac G5 shuts off again, try these steps, another recommendation would be to remove all connections including the power cord, and lay the iMac G5 on soft cloth face down and with a philips screwdriver, remove the plate on the bottom of the iMac G5 where your RAM memory is located.
Before removing the RAM however, touch your hand on the metal boot to discharge any static current you carry for approximately 5 seconds.

Now remove each RAM card and then reseat (re-install) each card.

Restore the RAM card cover with your Philips screwdriver, reconnect your power cable, keyboard and mouse and turn on your iMac G5.

See if this second procedure helps if the first procedure does not work.

Let me know if this helps.

Regards

-Mactechtrainer

1.: Find the disc that came with your iMac that says "iMac OS X Install DVD"
2.: Turn on your iMac
3.: Insert the disc into the SuperDrive
4.: Turn off your iMac
5.: Press down on the "Option" key on your keyboard, and keep it held down
6.: With your other hand, press the power button on the back of the iMac for 1-2 seconds
7.: A screen should come up with a picture of a hard drive, and a picture of a DVD
8.: Let go of the "Option" key
9.: Using your mouse, click on the arrow under the picture of a DVD
10.: Follow the on-screen instrustions, which will guide you through the process of re-installing OS X Leopard on your iMac

Has a speaker system ever worked on the iMac or is this the first try?

Does its onboard speaker work or is it muted? I'd start with some basic setup procedures.

Must be a bad batch.... I am returning the 2nd pair and going some where else to possibly buy a different headset, too!

Sound is controlled in the Systems Preferences. Go to the Apple icon (top left on top menu bar), then Systems Preferences > Sound. Check the Input Output configurations, making sure that mute is off and volume is on appropriately. I would think the "Built In" choices would be appropriate. I hope this helps.