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Kenwood kr-720 250 4amp fuse blows when power is turned on

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  • Anonymous Mar 25, 2014

    When I player my record player or listen to the radio, the sound would go in and out. Do I replace the fuse?

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  • Kenwood Master
  • 1,550 Answers

The audio amplifier IC on your device are damaged.

Posted on Jul 05, 2008

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Where are the fuses located in a kenwood , kr5030 ?


If there are any fuses you will have to take off the cabinet to see them on the inside. If not the fuse then it is most likely the power supply inside.

Jul 17, 2014 | Kenwood Stereo Receiver Am/fm Model...

1 Answer

My Kenwood KR-v8050 reciever will turn on, but will not go out of stand by mode, the visual screen also is not working, what am I looking at to fix this?


Sounds like either the main power fuse is blown,or the power transformer is bad. If the fuse is blown, probably means the amp is shorted.

Dec 31, 2012 | Audio & Video Receivers

2 Answers

My kenwood reciever kr-a4070 keeps blowing a fuse


have you tried a different outlet? something my be wrong internally

Jul 31, 2012 | Kenwood Audio & Video Receivers

2 Answers

Can the Kenwood KR-4600 connect to an ipod?


Hi,yes you can connect Kenwood KR-4600 to an ipod.


Instruction..

You will need an coolken_9.jpgRCA cable .


Connect the RCA (red and black to the input of the Kenwood KR-4600...You have options of inputs to use..

Either input at the back of the Kenwood KR-4600,or tape A and tape B..which ever you wan to use..

After connecting the red and black RCA to Kenwood KR-4600, then connect the other jack end to the ipod, and go the front of the Kenwood KR-4600 to activate the input selection knob to the desired input being selected at the back of the Kenwood KR-4600..

And don't forget to turn on the volume of the Kenwood KR-4600 and also the iPod volume..

And after that your done..

Good luck to you..

Aug 10, 2011 | Kenwood Audio & Video Receivers

1 Answer

Kenwood kr-v888d after "ON", through 3sec.


Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

May 18, 2011 | Kenwood KR-V5580

2 Answers

I have a Kenwood KR-A4010 Am/Fm Stereo Receiver. Every five seconds the sound fades in and out. Can anyone find a solution to this problem?


Something in the unit is smoked and potentially dangerous. Get that puppy down to a repair shop. Don't leave it unattended if you turn it on. Got a fire extinguisher handy?

Apr 28, 2009 | Audio & Video Receivers

1 Answer

Kenwood KR-A4070 blowing 5a 125v fuses


I am guessing that the ceramic resistor is close to the output transistors. I would also guess that one or more of the output transistors has shorted. This causes a high current draw that is blowing the fuse. You could also have a power supply problem. The ceramic resistor is a .22ohm dual emitter resistor that is used in the output stage. The transistors located close by are probably shorted and should be replaced. Start there and let us know what happens once the transistors and the resistor are changed.

Dan

Oct 10, 2008 | Kenwood Audio & Video Receivers

1 Answer

Kenwood kr-a4060 keeps blowing fuses


Check the audio amplifier Ic maybe its fried.

Aug 25, 2008 | Audio & Video Receivers

1 Answer

Problem with playing my Kenwood KR-X1000


Unit apparently has problems. Check/replace batteries in remocom

Nov 19, 2007 | Kenwood KR-X1000

2 Answers

KR-X1000 Power Problems


Sorry, no freebies from what I see online. But, when you power up, does it play before it shuts down? This will help me formulate a better answer for you...accordianman

Oct 25, 2007 | Kenwood KR-X1000

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