Question about Aiwa NSX-A115 Shelf System

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Power turns off immedietly

I am trying to ressurect an old friend of mine.I purchased an aiwa nsx-520 nearly ten years ago.Five years ago i was replacing the speaker wires,when the power switched off?Now every time i turn the system on,it immedeitly switches off?In this time the front display lights up,then goes off? Can anyone advise me with this.

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  • DUSTY99 Mar 10, 2008

    HI, I HAVE A AIWA CX-NA71 3 CD STEREO. IT WENT OUT WHEN I PLUGGED IT IN. WITHOUT SPEAKERS ATTATHED ON POWER UP, ALL THE LIGHTS FLASH WITH A CLICKING SOUND LIKE A RELAY ABOUT 10 TIMES THEN POWERS DOWN. WHENSPEAKERS WERE ATTACHED SOUNDED LIKE FULL SOUND OUTPUT WAS FLASHING THROUGH THEM LOUD THEN POWER OF. HELP.

  • alfredborg Mar 10, 2009

    Hi, I have the same problem. I have checked the output transistors and they seem fine. I have also operated the unit without the output transistors and still it does it. I have noticed that if I let it without power for a few days, when I power it the first time it takes about 20 seconds on. After that, it goes to standby again after a second or two. Any help please. Thanks

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  • 3,130 Answers

Yeppers, when you where changing out those speakers, you shorted them and that in turn blew out the audio output IC inside this unit. This will require you to disassemble the unit, locate the blow output IC abd unsolder it, get a new audio output IC, put some heatsink compound on the back of the new IC, resolder the chip and reasassemble the unit. But before you turn on the unit, double check those speaker wires again to make sure they are not shorted as if they are, even one tiny strand, this unit will blow the IC again. Never work the speaker on any solid state electronic amp when they are plugged in and on. Good Luck

Posted on Mar 27, 2007

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