Member Avatar for royng

I am encountering a problem when there is no sound coming from my mac when i am using the earpeices. Without the ear pieces, i am able to hear sounds. But when at the libray, we are suppost to keep our noise level down so i use my earpiece to listen to music but there are no sounds. I went system preferences and click sound. I then when to sound output and input to change the settings. But the problem still persist. Now when i am at the library i can only listen to my ipod. Is there anyone out there can help

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Extra diagnostic notes and safe fixes for "no sound through headphones" while the internal speakers still work. Thanks to for the report and to for the initial troubleshooting — the thread already covers the basic software checks; the points below focus on hardware detection, safe non-invasive tests, and low-cost workarounds.

Many MacBooks use a combo analog/optical (mini-TOSLINK) jack. When the optical transmitter is active the analog path is disabled. A quick check is to shine a flashlight into the jack or view it with a phone camera - a faint red or infrared glow means optical mode is on. If the jack looks clogged, try a few short bursts of compressed air and gently extract lint with a wooden toothpick wrapped in a little cotton. Always power the Mac down before probing the jack. Do not insert metal tools or pour liquids into the port.

An SMC reset (different from a PRAM reset) can clear low-level power or audio-hardware glitches. For notebooks with a non-removable battery: shut down, connect the MagSafe, hold left Shift+Control+Option and the power key together for about 10 seconds, release, then press power to start. For removable-battery machines: remove battery and AC, hold the power button for several seconds, reassemble and start. If the jack is physically failing, inexpensive USB audio adapters or Bluetooth headsets provide a reliable bypass.

When cleaning and SMC reset don’t fix the problem, the jack assembly or its solder joints usually need replacement. Opening a Mac risks ESD and may void warranty; professional service or an experienced repair technician is recommended. As a quick, low-cost alternative, a USB sound dongle restores headphone output without internal repair.

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Member Avatar for tje210

sure you're putting the line into the right jack? other than that, your computer might be on mute... the mac might be playing sound through the speakers, but as soon as you put headphones in, it goes to the last setting it has for headphones. try rebooting your computer with cmd+opt+p+r held down, to clear the PRAM. that's a general catch-all for me that helps a lot of the time.

Member Avatar for royng

i did that but it still the same

Member Avatar for tje210

hmm... i know it's silly, but have you tried with a different set of headphones? the problem might be the headphone jack itself. another thing to try would be to hook up a male-male headphone cable and check the positive/ground wires for a voltage with a multitester. you will probably find that nothing is getting through, but you never know. do you have a virtual machine on your mac? if so, is it able to get sound out through the headphone jack?

i'm just coming up with abnormal stuff here, because the normal stuff is done. you might try finding the sound configuration files in the operating system and seeing what they show.

Member Avatar for royng

The problems is solved when i sent my macbook to my nearest apple service centre. It seems that they install a new audio port for me. Thanks to all those who contribute help to me. I really appreciate

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