Shorted Audio Jack? - Asus P8Z77-V Pro

James Oblander

Honorable
Apr 27, 2013
4
0
10,510
Hey guys n gals, I need a second opinion here on what I believe to be a shorted rear analog audio jack(s).

The "story":
Was performing some routine maintenance (canned air dusting - yes I was grounded and unplugged) when I heard a low, sporadic hum from my sub (which was still plugged into the jack and powered at the time) as I unseated my video card. I didn't think much of it at the time but after I had got done blowing everything out and restarted the machine... no audio. Zip.

Mobo: Asus P8Z77-V Pro
Audio: RealTek onboard

A list of things I've done:
- cleared CMOS and double checked onboard audio was enabled
- double checked for conflicts
- uninstalled/reinstalled audio drivers
- plugged in a couple sets of speakers that I've verified to work
- updated drivers
...and notta.

Things of note:
- the RealTek audio manager/windows detects when something is plugged into the jack; for all intents and purposes windows and realtek think that everything is fine
- while using an USB mic it's clear that the chip is receiving a signal because I can see the levels spike in windows as I speak (assuming it's still the RealTek chip handling the recording
- playback sound levels spike in windows as I'm playing music as you would normally expect

Things I haven't done yet: reinstalled the mobo drivers

I'm kind of at a loss. Simple logic says that if the jack were shorted the software wouldn't detect anything being plugged into it. But if the onboard chip were shorted I would expect some sort of error being generated when it's being sent an instruction not to mention something would be mentioned in BIOS about a problem.

Anyone have any ideas??
 

James Oblander

Honorable
Apr 27, 2013
4
0
10,510


This is Win 8 by the way.

But to answer your question when right clicking the speaker icon in the taskbar in the corner and selecting 'playback devices' this is what I see:

Speakers
RealTek High Definition Audio
Default Device

Unless I'm peering in the wrong location I believe that would be a yes.
 

Right location. When playing a sound file, do you see the bars moving next to the Realtek HD Audio?
And yes, an usb headset/-phone would work.
 

James Oblander

Honorable
Apr 27, 2013
4
0
10,510


Sorry about vanishing. To answer your question the bars were in fact moving. Some how some way I managed to fry the jack when unseating my videocard. I picked up a set of USB speakers and viola they work just fine, though not really surprising. I noticed that a day or two after I posted this question the Realtek audio manager was going a bit crazy thinking something was constantly disconnecting and reconnecting with the jack... i unplugged the normal speakers and everything is nominal again.

 

It's probably not the jack, but one of the discrete components between the RealTek codec and the jack. The codec is located close to the graphics card slot and a soft touch with the Bracket can break a smd resistor.
 

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