Results 1 to 8 of 8

Thread: Fixing faders which donít fade down to silence

  1. #1
    Join Date
    Mar 2019
    Posts
    4
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    Fixing faders which donít fade down to silence

    Sign in to disable this ad
    Hi,

    I bought a 2nd hand RX1202FX recently to use for switching between synths live. I tried it out last night and discovered that when I pull the faders down I can still hear output (and no I wasnít using the mon feed!).

    Has anyone else had this issue with this or another mixer and is there anything I can do to fix it? I tried both FX feed and control room feed (didnít try main out as a jack to jack cable was what I had to hand). I tried with the stereo channels 9/10 and 11/12 and mono with channel 8, same thing. On one of the stereo channels the volume varied with a push/wiggle of the fader when turned right down.

    Thanks

  2. #2
    Join Date
    Feb 2009
    Location
    northampton uk home of Dr Who and Blackstar Amps!
    Posts
    10,019
    Thanks
    1
    Thanked 672 Times in 636 Posts
    Rep Power
    9374895
    Quote Originally Posted by DwarfCactus View Post
    Hi,

    I bought a 2nd hand RX1202FX recently to use for switching between synths live. I tried it out last night and discovered that when I pull the faders down I can still hear output (and no I wasn’t using the mon feed!).

    Has anyone else had this issue with this or another mixer and is there anything I can do to fix it? I tried both FX feed and control room feed (didn’t try main out as a jack to jack cable was what I had to hand). I tried with the stereo channels 9/10 and 11/12 and mono with channel 8, same thing. On one of the stereo channels the volume varied with a push/wiggle of the fader when turned right down.

    Thanks
    How much actual sound is still evident with the fader at end stop? You really need to quantify this because even the best faders only give an attenuation of -90dB or so and very high level signal will probably still be heard, especially at higher frequencies.

    If a fault condition it could be a poor connection in the earthy end of the track. Often this is a rivet and soldering it to the PCB can improve matters. Then if all the faders share the same earth path, crosstalk can intrude. Beefing up the earth track might help.

    The problem is taken so seriously on top line desks that they use "infinite end" faders where the last few mm or so has an insulated gap in the track. Below that the track is taken to earth via a separate wire removing it from the common earth "bus".

    Dave.

  3. The Following 2 Users Say Thank You to ecc83 For This Useful Post:


  4. #3
    Join Date
    Mar 2019
    Posts
    4
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Well even with gain and faders down there is still significant noise to be heard. Additionally when I tried again this evening I moved over to channel 2 from channel 1 and it was a decent volume, not just a small amount to hear, when I moved the fader up and down again it got quieter.

  5. #4
    Join Date
    Feb 2019
    Posts
    347
    Thanks
    28
    Thanked 20 Times in 20 Posts
    Rep Power
    0
    Quote Originally Posted by DwarfCactus View Post
    Well even with gain and faders down there is still significant noise to be heard. Additionally when I tried again this evening I moved over to channel 2 from channel 1 and it was a decent volume, not just a small amount to hear, when I moved the fader up and down again it got quieter.
    have you cleaned all the contacts with deoxit?
    The web site is Home - CAIG

  6. #5
    Join Date
    Mar 2019
    Posts
    4
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Not yet, I bought some WD40 contact cleaner (not the normal WD40).

    I have a video of the issue.

    youtu . be / FX5ZSlPJaWw

  7. #6
    Join Date
    Mar 2019
    Posts
    4
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Sorry, I couldnít post the link above properly.

    Do I just spray the cleaner into the fader slot and the pot hole once Iíve taken the knob off?

  8. #7
    Join Date
    Jan 2006
    Location
    Fremantle, Australia
    Age
    62
    Posts
    5,933
    Thanks
    0
    Thanked 220 Times in 202 Posts
    Rep Power
    11804435
    If you can still hear a signal with the faders down check that you are not feeding the mixer excessive gain at the inputs. If you drive these hard enough you will overcome some of the fader resistance when off.

    Alan.

  9. #8
    Join Date
    Nov 2014
    Location
    KCKS
    Posts
    127
    Thanks
    19
    Thanked 17 Times in 13 Posts
    Rep Power
    75262
    Quote Originally Posted by DwarfCactus View Post
    Sorry, I couldn’t post the link above properly.

    Do I just spray the cleaner into the fader slot and the pot hole once I’ve taken the knob off?
    I've found that spraying the pot, even with the knob still on can sometimes work, too. Then, turning the knob back and forth, over the whole path many times, to spread the cleaner over the whole path. Of course, if this doesn't work, removing the knob is necessary.

    If this is an older unit, normal dust and debris could collect in the slider path. Over time, the action of the slider itself pushes all of this to the two extremes, top and bottom. It's not that likely that you would ever have your fader at the top of the slide, but it is common to have it go to the bottom.

    You should use a good contact cleaner (like CAIG above) that will clean away this collected debris. It should have a small tube attachment on it, so you can push the tube down into the slot and spray at the bottom of the slide, while the fader itself is up at the top, out of the way.

    Then, move the fader up and down the path of the slide many times, to spread the cleaner solution over the whole path, making sure you work it at the bottom area, where you are assuming debris has collected. You could also take the case off of the unit, but that could end up being quite a task, if you have to remove a lot of knobs, first. Using the tube to get the solution down to where you need it should work just as well.
    Music ~ the International Language

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 2
    Last Post: 03-29-2016, 18:01
  2. How to set the faders of Midi keyboard with faders in soft synth
    By juveplu in forum Gear Reviews & Questions
    Replies: 0
    Last Post: 03-07-2015, 05:47
  3. Replies: 11
    Last Post: 03-23-2007, 12:41
  4. Performing Fade ins/Fade outs
    By GamezBond in forum Mixing Techniques
    Replies: 18
    Last Post: 01-23-2005, 17:16
  5. fade in fade out quit fading about
    By dobro in forum Mixing Techniques
    Replies: 9
    Last Post: 11-28-2000, 16:32

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •