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i think my mixer just died...

Discussion in 'Pro Audio Equipment' started by tomislav, Nov 4, 2004.

  1. tomislav

    tomislav Active Member

    Oct 25, 2004
    again, i have a soundcraft series 1s that i got because i can't afford anything right now.

    i've had it for about two weeks, and its worked fine. i just had a dead channel (1) and today the EQ wasn't working on channel five.

    Well, a few hours I go to do some work and the sound going into the 8-track was really distorted. i adjusted the peak, it wasn't that. i swithced to a different channel. it wasn't that. i tried different mics, different cables. it wasn't that. finally, i switched the headphones into the mixer from the 8-track. I pushed down 'solo' on a channel to see if it was the mixer that was distorting the sound. It wasn't. i plugged the mic into the 8-track and determined that it wasn't the problem either. Then I came to the conclusion that it was the XLR output from the mixer.

    I didn't know what to do, so I turned it off, came back about an hour later.

    This time, I try to do things again, but now there's a buzz that goes from being soft to really loud once i turn a channel on. once that buzz comes around, nothing becomes picked up.

    yeah. i'm going through a range of emotions right now.
    help me out. i hope it's not ready to be thrown out since i was really excited about finally having a mixer, even if it was a dinosaur.

  2. tomislav

    tomislav Active Member

    Oct 25, 2004
    I just tried it again.

    This time it was only distorted, the output. That loud buzz was not there. I guess when it would heat up, that would happen again.

    How do i stop the distortion? I already tried adjusting the peak levels.
  3. Your mixer needs some servicing.. It sounds like a few dodgy solder joints inside, maybe a couple of other problems, take it to a service tech. It's not going to get better by itself, but it doesn't sound hugely serious, so should be worth spending the money to fix.
  4. tomislav

    tomislav Active Member

    Oct 25, 2004
    how much do you think it would be to fix? do you think it would be worth fixing even though it's 30 years old? if it's going to expensive, i should probably just go buy a new one for $400 or however much it is.

    What do you think? where can i find a place to fix it?

    i wonder if i could fix it myself?
  5. Can't give you any ideas about cost, I would have to look at the mixer to see the extent of the problems. Go to your local credible music store and ask them about the best place to get a mixer repaired, they'll either have someone on staff or refer you to a local electronics guru. If it's still passing a signal and mostly working then it's probably not too serious. See if you can get a free quote...

    I wouldn't have a go at it yourself, mixers are complicated beasties. If you had were the right sort of person to fix it you would have had the covers off and pieces everywhere before posting here.. :wink: If you haven't done that yet, don't!

    I'd say that it's worth repairing over getting a cheap new mixer. An old mixer that was good new is still better than a crap new mixer, that is only going to end up as old crap...
  6. MrPhil

    MrPhil Guest

    Check the power cord, so that it's correctly connected. I've had problems once with a terrible hum that went thru the whole mixer, and all the problem was the power cord was halfway out and not connected properly.
    Just to rule this out, check it.
  7. AudioJohn

    AudioJohn Guest

    With a mixer of this age - the first thing that I would look at is the Power Supply.
    If you have a digital multimeter - check the voltages feeding the mixer.
    You should get (with respect to earth) +15 to + 17 AND -15 to -17 AND probably the +48 phantom supply.

    If one of these voltages was low (ignore the Phantom for now) - this might give rise to the distortion you report - also have a look at the large capacitors in the power supply - if these are bulging, or even leaking electrolyte (or just old) - this would produce the hum that you have mentioned.

    If you don't have a meter, or don't feel confident - you must find an "expert" to help you.

    Report your findings and we will suggest the next step......
  8. tomislav

    tomislav Active Member

    Oct 25, 2004
    Is that what I'm looking for? How do I use it? (I can send post pictures of the power supply, maybe you could tell me.?)

  9. fartecho

    fartecho Active Member

    Sep 29, 2004
    I used to own a 1s a few years ago, and I had a similar problem...local tech took a look at it for me for free (hope you can be as lucky) and said it'd be about an hours worth of labour work plus parts

    ...the problem w/ mine was a number of crapped out solder joints and a few of the stereo jacks needed replacing...though it very well could be a PS problem.
  10. tomislav

    tomislav Active Member

    Oct 25, 2004
    how much did he end up charging? do you still have it?

    where did you live/take it?

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