Question about JVC MX-KB4 CD Shelf System

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My stereo turns on and then says protect and turns off.I have disconnected the speakers and still happening..How can I fix this?

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The protect feature is intended to guard against a more severe problem inside the system. This can happen due to a variety of reasons, like a bad power relay. If the protect didn't kick in, there could be a nasty side effect like smoking, catching fire, or causing electric shock.

Unfortunately there isn't much you can do to fix this. Taking the system in for repair will likely end up costing much more than if you bought a used and working version of the same model. I'll bet anything the unit has something imprinted on the back like "No user serviceable parts inside." This means that even if there was a fuse inside, it's not recommended for the user to try changing it.

My recommendation is to put this off to the side and buy a replacement. You could try selling it on eBay or Craigslist for parts. The speakers probably still work just fine.

Posted on Nov 07, 2010

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1 Answer

Protection keeps poping up on my naxa stereo


The only thing you can do is disconnect all speakers and turn it on if it still says protect your problem is not speaker related. But if it comes on turn it back off and hook up 1 speaker at a time,then turn it on see if its ok.Then hook up 1 more try it again and so on.

Jul 31, 2012 | Naxa Nx-682 In Dash Car Mp3 Cd Player...

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My stereo sysytem is a mini stereo: serial number 10200055. It currently says "protect", what is this and how do we return our system to normal operations?


Hi there,

When the word PROTECT appears on this display, this means the unit has detected a critical fault which could potentially cause harm to your stereo system.

The most common cause is a short circuit somewhere - something even as simple as loose speaker wiring could cause a short, triggering the Protect message.

You will need to determine if there is a possible short somewhere, so I recommend you start by firstly turning power OFF, disconnecting all speaker wires, then turn unit back ON.

Operate the stereo (without speakers) and turn volume up:
  • If Protect message appears when turning volume up, then stereo unit itself has an internal fault
  • If no Protect message appears, then suspect the speakers may be causing the issue.
  • Reduce volume and turn unit OFF
Re-connect speakers (ensure the connections are secure), turn unit ON:
  • If turning volume up triggers the Protect message again, there is an issue with the speakers or connections

Hope this helps.....

Sep 04, 2011 | Kenwood Audio Players & Recorders

1 Answer

My stereo says" protect" everytime i turn it on. can't get anything else.


Hello grammagrisbo, hi your Kenwood head units will show "protect" when there's a problem with the speaker outputs so check to see if the impedance load meets your radio, 8ohms or 4 ohms?. having parallel two speakers on a single channel may cause this dilemma. This might also mean a shorted speaker wire, a blown speaker, or an internal defect in the head unit. Once the condition that's causing the "protect" mode is fixed, the CD player should be back to normal, the next time you turn it on.
If it's staying in "protect", then you'll definitely have to remove the stereo and do something to fix it. Many car audio stores will do system troubleshooting, for a fee. If you want to do it yourself, here's what you need to do:

Pull the Kenwood unit from the dash and disconnect all the speaker wires. power it on and see if the "protect" message displays. If it does, the stereo has an internal defect and will need to be serviced. If it doesn't, then turn it off, and re-connect one speaker only. Turn it on again and see if it will displays "protect" message.

If the radio works with one speaker connected, connect the other speaker to the second channel, you may have now the idea where the problem begun, you will identify the speaker that's causing the problem. There may be a wiring problem or defective speaker in that channel.

If it displays "protect" with a single speaker connected, then disconnect that one and try the other one. If all the speakers cause a "protect" mode, then you're probably back to a defective head unit.

Aug 31, 2010 | Kenwood Car Audio & Video

1 Answer

MY KENWOOD CAR CD PLAYER IS SAYING PROTECT??


Hi,

Kenwood head units show "protect" when there's a problem with the speaker outputs. This might mean a shorted speaker wire, a blown speaker, or an internal defect in the head unit. Once the condition that's causing the "protect" mode is fixed, the CD player should be back in normal mode the next time you turn it on.

If it's staying in "protect", then you'll definitely have to remove the stereo and do some troubleshooting to fix it. Many car audio stores will do system troubleshooting, for a fee. If you want to do it yourself, here's what you need to do:

Pull the Kenwood unit from the dash and disconnect all the speaker wires. Turn it on and see if the "protect" message displays. If it does, the stereo has an internal defect and will need to be serviced. If it doesn't, then turn it off, and re-connect one speaker. Turn it on again and see if it displays "protect".

If it works with a single speaker connected, keep re-connecting the others until you identify the speaker that's causing the problem. There may be a wiring problem or defective speaker in that location.

If it displays "protect" with a single speaker connected, then disconnect that one and try a different one. If all the speakers cause a "protect" mode, then you're probably back to a defective head unit, unless your friend managed to blow all your speakers at once.

Thanks,

Dec 09, 2009 | Kenwood KDC-319 CD Player

1 Answer

My stereo keeps saying ''protect''. how can i fix it? ive tried to unplug it for 4 hours and it still dont work


Check the speaker wire connections and make sure that none of them are crossed. Shorted wires will cause the reciever to turn on the protect mode to keep the amplifier from shorting out. Try disconnecting the speaker wires from the reciever. if you turn it on and it still says "protect" then the short is possibly in the reciever itself.

Nov 08, 2009 | Cars & Trucks

1 Answer

My jbl stereo wont turn on. when i turn my truck on it just lights up and then goes straight back off


Hi there Willieulin.
I wonder if the speakerwires are shorting the amp in the JBL stereo!
One or more speakers could be blown......
The protection circuit is most likely doing its job, protecting your stereosystem from damage.
If you have a extra amp connected to the stereo, check if it is wired right.
Try to turn the ignition key "only" so the lights on the stereo turn on. If you turn it further so you start the engine it most likely turns the stereo off.
If that happens the powerwires to the stereo are wrongly connected.
Luck with the problem.
Iceman.

Nov 04, 2009 | JBL SF25 Main / Stereo Speaker

1 Answer

How do i fix tis problem


First, disconnect all your speakers from the back of the unit. Then turn it back on, if it does not go into protection, turn it off and examine your speaker wires, look for frays that could touch the other binding post (most common problem). Then re connect speakers one by one; testing after each connection. If you get them all re connected and it still plays, you've solved the problem. If you get to a particular speaker and it cuts off, check the wire, then check the speaker. If theres nothing plainly visible, swap the speaker for one that is working and try again. If it still shorts, try a new wire. Beyond that, if it's still shorting, theres a problem internally with the receiver and it need to go to service. If you have all speakers disconnected and it still goes into protection, there is nothing you can do but get it serviced. There are no internal protection "fuses" Hope this helps

Jun 30, 2009 | Sony STR-DE597 Receiver

2 Answers

My stereo


Disconnect your speaker boxes. If the "protect" error goes, then the speakers or wires may be at fault. If the error remains, most likely the audio output IC is blown.

Aug 31, 2008 | Sharp CD-BA200 CD Shelf System

1 Answer

My amp turns on and off


Sounds like there could be a short somewhere. Check to make sure that there aren't any (exposed/bare) wires touching each other or if there is a bare spot of wire touching something metal. Check both ends of all the wires. A speaker wire may have come lose and is shorting out against the frame or some other place. Usually if it goes straight into protection mode or you're popping fuses you have a short somewhere. I assume the capacitor you installed is somewhere on the power line, which would be for helping with
noise. You can also try disconnecting your amp from your stereo and see what happens but leave the speakers connected, you don't want to run the amp with out a load on it (the speakers). If your amp doesn't go into protection mode when the stereo is disconnected, then you have a problem with the stereo and not the amp, assuming you already checked for any possible shorts first.

Jun 15, 2008 | Pyramid PB1236GX Car Audio Amplifier

3 Answers

Protect mode


Hi ,
Does your unit go into protect mode without speakers connected?.
Jango

Jan 26, 2008 | JVC HX-D7 Shelf System

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