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Vestax 04FX power input damage

None of the repair people we've tracked down are willing to look at it as they all have deals with Pioneer etc... But basically, Vestax was knocked over by a cat, landed on the back side up. Took it to a gig and could only get it to stay powered on by taping the adapter wire down so it went in at a certain angle. After the gig not even this trick worked. Any thoughts appreciated. We already tried bringing it to a local electric store and tested the input with new adapters and have ruled out the adapter being the problem. Is there anything a soldering iron can do?

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Posted on Jan 02, 2017

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SOURCE: Loose AC connection to electronic piano

Your problem is most likely a broken cable in your ac cable. Try to replace the cord first (a place like Radio Shack will have replacements). If it's not the cable, then you might have a broken soldering point inside your keyboard. It might be too small of a crack to see, but redoing the soldering points should work.

Posted on Feb 06, 2009

  • 1138 Answers

SOURCE: No power cord or ac adapter

Sometimes the instrument or keyboard will have the power requirement embossed on the case near the receptacle for the power supply. Hope that helps.

Posted on Apr 23, 2009

  • 5603 Answers

SOURCE: CTK-541 does not work with power adapter connected.

You probably have a bad solder connection at the inductor which is a filter coil to reduce EMI.

It is not uncommon to have one of these heavier components bust the solder connection...

NOTE: It takes a trained eye to spot the little gray ring around the lead that says the connection is broken.

Reheat the solder of the connections on that inductor and see if that doesn't fix it. If not, continue tracing the voltage.

ALSO a cracked circuit board can manifest itself this way. USE A BRIGHT LED flashlight to "candle" the board and look for cracks.

Posted on Dec 25, 2009

Testimonial: "Bingo. By shining a light under the board, I saw that the + power pin layer had cracked, eliminating continuity. A short jumper did the trick. Thanks."

SOURCE: casio lk-33 does not work with external power

I once had this problem with another Casio synth.
I hadn't the power adapter ant I tried with an other one, with the same specifications : the synth was apparently powered but it didn't work.
I finally understood that it was a problem of polarity (+/-). You may just have to cut the cable and resold it inverted.
Hope it could help!

Posted on Apr 26, 2013

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