Intense high pitched sound from my Lav mic kit- Help!

B

BrettR.

Active member
I have a Azden 500UDR receiver and an Azden 51BT transmitter I use with my Lav mic. Today, ou tof no where, when I turn on my transmitter, before I even attach a mic, it starts sending out a horrible high pitched tone into my headphones, and into my camera as well, as my audio levels slam nearly to the top. I turned everything on and off a few times, but nothing changed. I'm hoping that this is some silly mistake, that something got hit in my bag, and that I just don't know enough to know what button to hit.

Thanks!
 
Have you tried connecting the lav first, then powering the transmitter on? On some gear, open inputs can generate weirdness on their own but it goes away when a source is connected. Also, it's not standard procedure to activate the transmitter first then connect the lav.

Other than that, all I can speculate without actually hearing a sample of the noise is... there's a reason Azden doesn't get much love around here.
 
Alex H. said:
Have you tried connecting the lav first, then powering the transmitter on? On some gear, open inputs can generate weirdness on their own but it goes away when a source is connected. Also, it's not standard procedure to activate the transmitter first then connect the lav.

Other than that, all I can speculate without actually hearing a sample of the noise is... there's a reason Azden doesn't get much love around here.
Click to expand...

I tried doing everything in the normal order, same result.

here is a sample of the noise, which is highly annoying, so check your speaker volume before you press play.

https://vimeo.com/44081268
 
anybody else? I might have a job coming soon where this would be very helpful to have under control...
 
Try another mic, could be the cable or foreign material on the element itself. If the results are the same, that eliminates the mic as the cause of the problem.
 
Rick R said:
Try another mic, could be the cable or foreign material on the element itself. If the results are the same, that eliminates the mic as the cause of the problem.
Click to expand...
The noise happens even with no mic plugged in, so it isn't that. It's not the XLR cable, because I used it with a mic yesterday. so it's down to the transmitter or receiver. I only have one of each, so I have no way of narrowing it down any farther.
 
Turn off the transmitter and see if the receiver still makes the sound. If it does, it's the receiver. Also, have you tried testing this at a different location? You might be intercepting something local to the area.
 
I tested it in a location 80 miles fromt he old one: same deal. Then i remembered that I have a separate hand held mic transmitter. I tried with that, same problem. Tried a different XLR cable: same. So it's down to the receiver being the issue, fromt he best I can tell. All units are ont he same channel and so forth. So I guess that's the end of the story huh? It's probably toast and I need a new kit...
 
Anyone know of a repair shop for audio equipment? No liking the idea of having to drop $720 right now...
 
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