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Bill Papas Posted on Mar 29, 2019
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I have a Jensen QX80 Subwoofer which has stopped working properly. When I power it up, it turns on and makes a buzzing noise, I could smell a burnt electrical smell when it first occurred. Any advice?

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Brian Supertech99

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  • Posted on Mar 29, 2019
Brian Supertech99
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Definitely the power supply, could be as simple as a blown or leaky cap, possibly the regulator or diods, rarely it's the output transistors, but without looking at it, it's really hard to determine the actual issue or issues, I do offer repairs at realistic prices and offer 1 to 2 day turnaround time to service it!!!

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  • Expert 61 Answers
  • Posted on Mar 29, 2019
Greg Peyton
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Bill,
Sorry that I have to be so general in answering this question. If there is a burnt smell associated with the occurrence of the problem, then that would point to a fault most likely in the audio output circuit. If the unit blows a fuse, then I tend to think that it is in the power supply of the internal amplifier. Either way, service is needed for the unit. It is best to disconnect the unit from your sound system and try to find someone qualified for this repair.

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5 Related Answers

Anonymous

  • 146 Answers
  • Posted on Dec 21, 2007

SOURCE: Oven not working -makes a buzzing sound when turned OFF!

You just need to adjust your door latch assm. Try putting a little oil on the latch and arm. The sound you hear is the solenoid trying to pull the latch arm all the way back to lock the door. Even though it is pulling the arm back and the door locks it may not be all the way back. A little lubrication will fix the problem.

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A

Anonymous

  • Posted on Apr 10, 2008

SOURCE: Subwoofer just stopped working. There's power but no sound.

I have the same problem. My guess is that the subwoofer coil is messed up. You MIGHT have to get it recoiled. But before you do any of that get someone with a sub to play their sub in your car, if it works.... then your sub is messed up, if not.....then your amp is messed up ( trial and error ). Today i noticed my subs rubber surrounding is crooked, that may be the problem for me. Also when I press down on the sub it makes a sticking sound, like something came loose. So once i get everything opened and out ill let you all know the solution. Good Luck!

Anonymous

  • 5 Answers
  • Posted on Dec 16, 2008

SOURCE: loud humming buzzing sound coming from subwoofer

make sure you have the speaker connection right if you do then it is a ground problem try plugging it in a different outlet

Anonymous

  • 1902 Answers
  • Posted on Feb 21, 2009

SOURCE: GE Spacemaker XL1800 does not heat

Possible bad heating element, You should remove the cover of the unit and look at the heating element with the power off. Until you get your problem resolved I would recommend not to even turn it on due to the fact that you are unsure what is going on and you smelt some burnt smell. Just for safety until you fine the problem

Anonymous

  • 1489 Answers
  • Posted on May 03, 2009

SOURCE: Clock on a GE electric range is buzzing - how to disconnect it

Turn off power to range first!!!

You'll have to remove the back of the panel in which the clock is installed to access the back of the clock. There will be two wires attached to the clock. Just pulling one of these wires off will stop the clock.

I would suggest, however, that you pull both wires off, put electrical tape on the ends of the connectors, and tuck them out of the way somewhere around the clock.

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I would check the caps on the power supply. They are rather large electrolytic capacitors that will look like they burst and/or leaking. When these die, the caps ground and the sub will make a loud buzzing sound. If you are handy with a soldering iron you can replace them yourself. Replace them with the same voltage or a little bigger and same with the size.

If the cap. says 16v 4700pF on it, for example, a 20v 5300pF or a 16v 6200mF cap. will work for this application.

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I have the same problem. My guess is that the subwoofer coil is messed up. You MIGHT have to get it recoiled. But before you do any of that get someone with a sub to play their sub in your car, if it works.... then your sub is messed up, if not.....then your amp is messed up ( trial and error ). Today i noticed my subs rubber surrounding is crooked, that may be the problem for me. Also when I press down on the sub it makes a sticking sound, like something came loose. So once i get everything opened and out ill let you all know the solution. Good Luck!
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