A1 and headphone problem at DVinfo.net

Stephen Sobel · November 23rd, 2008, 09:49 AM

I have used headphones in the past to check sound levels while taping with my A1 with no issues. Yesterday I started to do so, and to my chagrin there was a buzzing sound in one ear phone ( but not the other). When I hook up these headphones to my pc, there is no problem. Is it possible while adjusting the audio settings for my external mic I messed up something? Or do I have a problem with the A1 that will lead to me sending it away for a repair? Any ideas or possible solutions (other than sending it away)?

Allan Black · November 23rd, 2008, 02:03 PM

Is it possible you didn't push the phones plug fully into the A1, that could cause that hum.

And is the audio hum free on both A1 tracks? If it continues try running the A1 on A/C power and see if that clears it. Also try pushing the A1 reset button.

Cheers.

Stephen Sobel · November 23rd, 2008, 02:34 PM

When plugged into my pc, I can listen to music with no hum in either ear. When plugged into my A1, there is a lour buzz in the right ear. AC power makes no difference.

How do I use the reset button?

----------------

Never mind. I figured out the reset button. That did the trick!

Allan Black · November 23rd, 2008, 02:42 PM

Stephen I've never used the reset, best to follow the manual instructions. Also do you have another set of cans to try? If not take the cam to a sound shop, try everything before sending it away for fixing.

EDIT...great stuff!!

Cheers.

Stephen Sobel · November 23rd, 2008, 02:55 PM

I googled and found how to do the reset button. You make sure the battery is out and there isn't any AC power connected, and then lightly push it. I used the unfolded end of a paper clip. That did it.

Allan Black · November 23rd, 2008, 03:16 PM

Did you have to reset the A1 clock and other settings?

Cheers.

Colin McDonald · November 23rd, 2008, 05:36 PM

Quote:

Originally Posted by Stephen Sobel

I have used headphones in the past to check sound levels while taping with my A1 with no issues. Yesterday I started to do so, and to my chagrin there was a buzzing sound in one ear phone ( but not the other). When I hook up these headphones to my pc, there is no problem. Is it possible while adjusting the audio settings for my external mic I messed up something? Or do I have a problem with the A1 that will lead to me sending it away for a repair? Any ideas or possible solutions (other than sending it away)?

I know this sounds daft (please don't be insulted) but I once had a similar problem and it turned out to be because I had plugged the headphones in to the AV socket instead of the headphone jack (- we were 2 crew down and I was rushing about setting up 4 cameras with a very tight timescale before a live performance).

I noticed just in time and felt very silly but also very relieved it was something so simple.
Can you definitely eliminate this possibility?

Stephen Sobel · November 23rd, 2008, 05:56 PM

Quote:

Originally Posted by Colin McDonald

I know this sounds daft (please don't be insulted) but I once had a similar problem and it turned out to be because I had plugged the headphones in to the AV socket instead of the headphone jack (- we were 2 crew down and I was rushing about setting up 4 cameras with a very tight timescale before a live performance).

I noticed just in time and felt very silly but also very relieved it was something so simple.
Can you definitely eliminate this possibility?

I don't believe that I was doing that, though it's possible. Since I did the reset, everything has been fine.

Allan - I did have to reset the clock, and I also had turn on the presets. However, I didn't lose the custom presets I had loaded - so everything isn't reset.

Steve Wolla · November 24th, 2008, 12:32 AM

Yeah, it sounds just like the headphones were plugged into the AV socket. I too did that once (that I will admit to) and just slow things down a bit now so as to avoid a repeat of that scenario.

November 23rd, 2008, 09:49 AM	#1
Stephen Sobel Major Player Join Date: Nov 2002 Posts: 408	A1 and headphone problem I have used headphones in the past to check sound levels while taping with my A1 with no issues. Yesterday I started to do so, and to my chagrin there was a buzzing sound in one ear phone ( but not the other). When I hook up these headphones to my pc, there is no problem. Is it possible while adjusting the audio settings for my external mic I messed up something? Or do I have a problem with the A1 that will lead to me sending it away for a repair? Any ideas or possible solutions (other than sending it away)?

November 23rd, 2008, 02:42 PM	#4
Allan Black Inner Circle Join Date: Sep 2006 Location: Sydney. Posts: 2,928	Stephen I've never used the reset, best to follow the manual instructions. Also do you have another set of cans to try? If not take the cam to a sound shop, try everything before sending it away for fixing. EDIT...great stuff!! Cheers. Last edited by Allan Black; November 23rd, 2008 at 02:43 PM. Reason: it worked!!

November 23rd, 2008, 02:03 PM	#2
Allan Black Inner Circle Join Date: Sep 2006 Location: Sydney. Posts: 2,928	Is it possible you didn't push the phones plug fully into the A1, that could cause that hum. And is the audio hum free on both A1 tracks? If it continues try running the A1 on A/C power and see if that clears it. Also try pushing the A1 reset button. Cheers.

November 23rd, 2008, 02:34 PM	#3
Stephen Sobel Major Player Join Date: Nov 2002 Posts: 408	When plugged into my pc, I can listen to music with no hum in either ear. When plugged into my A1, there is a lour buzz in the right ear. AC power makes no difference. How do I use the reset button? ---------------- Never mind. I figured out the reset button. That did the trick!

November 23rd, 2008, 02:55 PM	#5
Stephen Sobel Major Player Join Date: Nov 2002 Posts: 408	I googled and found how to do the reset button. You make sure the battery is out and there isn't any AC power connected, and then lightly push it. I used the unfolded end of a paper clip. That did it.

November 23rd, 2008, 03:16 PM	#6
Allan Black Inner Circle Join Date: Sep 2006 Location: Sydney. Posts: 2,928	Did you have to reset the A1 clock and other settings? Cheers.

November 24th, 2008, 12:32 AM	#9
Steve Wolla Major Player Join Date: Nov 2005 Posts: 477	Yeah, it sounds just like the headphones were plugged into the AV socket. I too did that once (that I will admit to) and just slow things down a bit now so as to avoid a repeat of that scenario.