Zach R

UCR411a select buttons beep

12 posts in this topic

One of my 411s seems to beep when I press the select arrows. 

It's a pretty faint beep that you'd only notice when pressing the buttons in a quiet room. 

I did a forum search and didn't find anyone else talking about this, so I was wondering if this is something others have experienced? And if so, what causes it?

 

thanks

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Thee is no beeper designed into the UCR411a or transducer of any type.  The only thing I can think of would be a faint noise either from the physical button squeaking along the side of the hole in the panel or perhaps a very faint change in oscillation of the controller for the LCD display as the display reacts to the button push.  (LCD's and their support circuits can "whine" at extremely low levels) If that's the case, I want your hearing!

 

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I figured there wasn't a beeper built into the 411. 

In regards to the physical squeak - it's only audible through the 411's output. I wouldn't hear a squeak from pressing the button if the unit was off or not running through something with headphones. 

The LCD screen whine you speak of sounds like the closer match. Though, rather than a whine, it's definitely a short beep - like a very faint Casio watch beep. 

If it makes a difference, it makes the beep at the home screen as well (where the select buttons do not affect the LCD)

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I've heard the said beep in some 411a also. It's very faint but it's there. Seems to be some, not all 411a. I've never worried about it. 

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i'd like a ear transplant with yours Zach... 

 

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10 minutes ago, soundtrane said:

i'd like a ear transplant with yours Zach... 

 

I wish I could say my ears were THAT good! Haha

 I'm thinking it's not the LCD whine you're talking about though. It doesn't seem to correlate with the LCD changing. Rather, it's more a direct 'press button' -> get a beep through the output. - like the digital watch example. 

Thanks Peter - glad someone else has heard it. Since its not something hindering my recordings I'm not really worried about it either. I'm just curious about it. 

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Have you tried it with internal batteries or even just a different power lead? Just curious if it could be a power issue.

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We have heard this occasionally when signals from the display (or button presses) find there way into the oscillator and "modulate" the first conversion oscillator. If your display cable is routed near the oscillator cover (1st photograph) try routing as shown in the second photograph shown here.

Follow the tutorial shown on our website (up to step 7) to get access to the display cable:

http://www.lectrosonics.com/US/Service-Bulletins/sb1005-lcd-display-module-pn-48353-replacement-instructions-for-ucr-series.html 

LCD_Cable_near_VCO_Cover.jpg

LCD_Cable_reroute.jpg

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Jason - I tried different leads and different power cables. No difference there. :/

 

Thanks for the images and instructions Dean. This will be a project for my next day off. 

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Excellent information from Dean at Lectrosonics. Outstanding customer support as usual. 

I have 23 x 411a so I'm not going to bother opening them all up! Would do my head in! Good to know though if it ever becomes a problem. 

Thanks Dean

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These are the things I obsess over for no good reason. 

Best thread in ages. Now I want to go play with my 411s and see if they beep. 

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First it's coveted ears... and now best thread. 

I'm honored. Enjoy the beeps!

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