Sharp CD-PC3500 CD Shelf System Logo
Jamal Gaddie Posted on Jun 21, 2007
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PROTECT I have this stereo, but everytime I turn it on it displays normally and then shuts off and the word Protect flashes on the display repeatedly. Once this happens there is no other functions that work on it, has anyone run across this problem if so how do I fix it? I have tried unplugging it and waiting, and resetting the computer but nothing works.

  • Jamal Gaddie
    Jamal Gaddie Jul 03, 2007

    What is the audio output ic, I am pretty handy, is something that I can change myself?

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1 Answer

Luis Amado

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  • Expert 129 Answers
  • Posted on Jun 22, 2007
Luis Amado
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Joined: Jun 09, 2007
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The audio output ic's need to be replaced. need to contact and audiotech to do the job . the job require experience to be done. around 60.00 in parts . if you need more help let me know.

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0helpful
1answer

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.....

5helpful
1answer

My JVC car stereo display " Protect " on display

FIRST PRESS THE RESET BUTTON BEHIND THE FACE IF DONT WORK CHECK ALL SPEAKER WIRES SOMETHING MIGHT BE TOUCHING
2helpful
1answer

When i turn on , the display is" PROTECT " KENWOOD XDA55

make sure the speaker wires aren't shorted anywhere.....a short normally activates protect mode on most stereo systems.
3helpful
1answer

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.
15helpful
2answers

My JVC mx-gc5 stereo says protect and then shuts off

If protect is coming up on the display, it means the system is detecting a short somewhere on one of the speakers and so is turning the amp off to avoid damage.
Check all the connections at the back of the amp to ensure they are not shorting, and at the back of each speaker, if nothing is found there, check each wire for damage (like squashed or rodent damage).
10helpful
1answer

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,
2helpful
1answer

Everytime i turn on the stereo it shuts off an says protect

When sound system shows Protect that means it got problem in amplifier section and protection circuit is activated that shuts down system in safety. Qualified tech will fix it.
62helpful
9answers

Security Code for Protect mode

Turn on the car so the radio is flashing "Protect." Look on the front / removable face of the stereo. On it you will find a small round hole - that's a reset button. Find a small paper clip, unfold the clip and stick it gently into the hole. The "Protect" will stop flashing, and Kenwood will be displayed. Unfortunately all your settings/presets will be gone, but at least the stereo is working again!
1helpful
1answer

Protection displayed and shuts off

The protect message indicates that the output amp section has a problem. Normally this requires the replacement of the output transistors or the output amp pac. Expect the repair cost to be about $20-$60 for parts plus the local labor rate.
Dan
0helpful
1answer

Press Power Protect

Always be solved replace him the audio amplifier IC
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