Question about Yamaha Mg8-2fx 8-Channel Mixer with Effects System

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One of the capacitors burned out, and the mixer didn't power up. After replacing the capacitor, it powers up and works normally. However, the capacitor is producing high heat and burning smell. It will probably burns out if it is kept powered up. What is the problem?

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  • Samuel Charles Spriggs Mar 16, 2011

    Sounds like there could be a bad resistor in series with the capacitor which is allowing too much voltage across the capacitor (therefore too much current). Or, it could be the motor winding beginning to fail (also allowing too much current through the capacitor). Or ??

    Charlie

  • Jacob Paul
    Jacob Paul Mar 16, 2011

    It would be easier if you could give the value of the capacitor so we can figure out which area it belongs to.

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After switch through relay then down to fuse you should come to a full wave rectifier (solid state vs. tube?). The output of the rectifier goes to the filter caps. example: +30vdc, -30vdc with respect to ground. Best of luck.

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SOURCE: the amp just quit. will not power back up.

Ok there is a few steps to check in this case.
1. Make sure the positive cable is secured proply on the battery termnial also while you are there as well check to make sure the fuse on the positive cable isn't blown.

2.Make sure your ground cable is secured proply down on the frame of the car or if you are runing a negitive cable back to the battery(the same apply,s as step 1 - less the fuse).

3.Check to make sure the remote turn on cable is not lose on the amp connection.


Hope this will help a bit.
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Posted on Oct 02, 2009

dunnbiker
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SOURCE: just stopped working.Doesn't power up you can

This isn't something we can help you with. Keep a fire extinguisher handy if you want to keep messing around with it. It needs hands- and eyes-on by a pro.

Posted on Feb 03, 2010

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