Mixer problem Need Help!

Discussion in 'Consoles / Control Surfaces' started by ROBSCIX, Mar 26, 2006.

  • AT5047

    The New AT5047 Premier Studio Microphone Purity Transformed


    ROBSCIX Guest

    Hey guys, I tried to post this before didn't seem to work. SO if I double post it's a accident. OK connecting up my imixer this mourning. OUt of nowhere my SUBMIX right Peak LED comes on and STAYS on. I disconnect all signals and zero all knobs and it still stays on. I unplugged it. Turned of/on NO luck. Double checked everything...Nope. Also when I turn it on the right side meter goes to 100% then drops back down..but the LED stays lit. I also checked the manual for this mixer and it says you can cross outputs or whatever and it won't urt it..so I am not worried that I accidently crossed a signal and it peaked out..etc. I am not that familiar with mixers I just got this one from a friend. It didn't have this problem before. Can any of you guys who know about mixers give me some info? The Mixer is A Yorkville AudioPro 512 Powered mixer. Older but still nice mixer. I don't use the power outs. SO it's off and unplugged but I am at a lost as to what to do next. Any help would be appreciated. I have like everything plugged into this mixer..lol
    mark likes this.
  2. RemyRAD

    RemyRAD Member

    Sep 26, 2005
    Yorkville, is not what I would consider one of your top of the line amplified mixers, but here goes.

    The first thing you must do is to determine if there is something wrong with the audio output or whether it is just merely an IC chip/LED display problem? Most overload LEDs are powered by crappy little substandard IC chips that can/do go into oscillation all by themselves when they crap out and can illuminate an LED as you have described here with no actual input source.

    Also if you have something like Adobe Audition or Cool Edit with the built-in spectrum analyzer, you should record some quiet/no audio and then observe a playback with your spectrum analyzer to see if there is any visible oscillation taking place? If a TV is on nearby it is not uncommon to see 15,750 hertz spike which is the horizontal sync oscillator which usually is around -30 DB or lower, if it gets into your recording as it frequently does.

    It is also possible that something else within the mixer has gone into oscillation that is producing an ultrasonic frequency you cannot hear and that you will not be able to see on the software analyzer. Ultrasonic oscillation can actually kill your studio speakers as it blows out hi frequency drivers quite quickly and can also overheat low-frequency drivers as well, if not filtered out within the crossover.

    In the end, it may be nothing more than just a visual aggravator?

    Recording.org forum aggravator
    Ms. Remy Ann David

    ROBSCIX Guest

    Upon further testing it seems that the right channel is OUT. I cam get no audio through that side. So the SUBMIX right PEAK LED is lit and there is no AUDIO through that channel, I cannot send audio through that channel. It just seems to be gone. So I am at a loss, I have moved the mixer around the house trying different outlets etc. Same thing. THis just popped up out of nowhere. SO I am not sure how to proceed.

    ROBSCIX Guest

    THe Mixer has been sent to the shop, I will be hearing from the technician tommorow regarding whats going on and what options I have, Hopefully it's something easily repaired. I guess I can get it cleaned and have a couple knobs replaced. THX for the help people.

    Can anyone give me information regarding what to watch out for when dealing when dealing with these type of guys, I don't want to get ripped.

  5. My guess is you'll hear back that there's a dead short somewhere.


    ROBSCIX Guest

    The Technician said for Yorkville gear it goes back to the Yorkville factory in Toronto about 200 miles from me. He said it's gone into "Protect". I just hope it doesn't take very long and they give it a good once over when it's there. I'll get it back nice and clean and working perfect. I asked him what could have caused it and he said probably age. It is a older model but a good workhorse for me.

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