Question about Yamaha YST-SW015 Subwoofer

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Schematic I need a schematic for a yamaha YST SW015

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  • ianhuysmans Sep 15, 2008

    I need a schematic of this product

  • nessagerm Apr 22, 2009

    resister 46 has blown in the sub and i cant tell what the color bands are any help?

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Hi,
Similar problem, maybe inherent to this sub, found wiring diagram ( can't remember where right now) R46 is 150 ohm - 1/4 watt. As informed by many sources - burnt resisitor just result of other fault - on replacement resisitor just smoked it up again. Have tech attempting to separate power supply from amp to locate problem. WIll post result if faulty component is located. Not much of a sub anyway - just can't bear to throw it away for cost of minor component.

Posted on Jun 20, 2009

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Yst-sw015 koks rezistoriaus R30 nominalas?

Posted on Feb 09, 2010

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Haveing the same problem but with R45 anybody know the value searched the net for hours nobody got the specs any help whould be appreciated

Posted on Feb 04, 2010

  • 1fastgsxr Feb 04, 2010

    just got the manual online mine did the same thing but it was r45 any luck on the repair

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Resistor at that range work as a current limiting, look at the power transistors. they are mounted on the heat sink. remove them and check with a meter for shorts.
Look at newark electronic for parts, I have found the parts to be very reasonable

Posted on Jul 18, 2009

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Hi I have a Paper Factory Original Manual on This one kstahl65@att.net Ebay ID Hawkwatcher65

Posted on Jan 12, 2008

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Posted on Jan 02, 2017

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1 Answer

System firing up - no audio


The problem is Ic or transistor but just check

Nov 07, 2012 | Yamaha YST-SW015 Subwoofer

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My YST-SW015 stopped working out of the blue. It turns on just does not produce any sound. I feel like it might be a fuse issue ... but on the other hand i have very little knowledge about the technical...


You have to remove back panel in order to find fuse. Check it, then check resistors - one of them can be black colored - it's burnt. In my case problem was in STK 404-070 power amplifier. Replaced and sub works again.

Jun 08, 2011 | Yamaha YST-SW015 Subwoofer

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Just setup, not working


Try to update the S\W it will fix it

Feb 22, 2011 | Yamaha YST-SW015 Subwoofer

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I need the value of resistor 45. It is discolored and looks like either red white red or orange white orange. I think the tolerence is silver but not sure. Thanks, ae4qp The unit comes on but has no...


150 ohm, 1/4W. But the problem is in STK 404-070 power amplifier. If you change only resistor, it will burn again. Try to replace power amplifier and then resistor.

Dec 28, 2010 | Yamaha YST-SW015 Subwoofer

1 Answer

Blown resister #46 need resistance value or color bands


From what if read number r46 is 150ohm im looking for the value of r45 hope it helps

Apr 22, 2009 | Yamaha YST-SW015 Subwoofer

2 Answers

Wiring information Re: Yamaha Computer speaker model # YST-MS201


Hi Robert,
Try to locate your manufacturer's websites or surf to google, this might help. You can ask what you need , or maybe they will ask you for a price or fee. You may request free download in google.......good luck..

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