Question about Kenwood KDC-355U CD receiver

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How to fix protect mode

Everything i tried resetting and nothing happens undid all the speakers unplugged wiring harness and still nothing it just stays flashing protect

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 132 Answers

SOURCE: DCER error (people spell it "ocer"

Problem is the internal amp chip, if it was a speaker problem or shory they flash Protect.

OCER oe DCER is the amp chip Part #KKZ10 REF# ic5

Posted on Jul 25, 2008

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  • 6 Answers

SOURCE: the amp blow out a speaker box i went to hook a

check your amplifiers connections, maybe one has come loose, eg. the ground connection(if this is not properly earthed, this can cause a short, and blow fuses)

Hope this can help..
Aaron

Posted on Aug 09, 2009

  • 4 Answers

SOURCE: I have a Kenwood car stereo model # KDC-MP342U.

hold down preset 3 & 6 + reset
press preset 1 - shows dc err
press preset 1 - shows dc ok
press preset 2 - shows dc 2-4
press preset 2 - shows dc 2-0
then unit should be ok with eeprom reset

Posted on Jul 24, 2010

pctech1
  • 1940 Answers

SOURCE: Kenwood KDC-MP732 CD Player in protect mode how do

Protect Mode (Blink): The speaker wire has a short-circuit or touches the chassis of the vehicle, and then the protection function is activated.

Solution: Wire or insulate the speaker cable properly and press the reset button.

Here is a copy of the Instruction Manual for the Kenwood KDC-X790 and KDC-MP732.

Posted on Jul 25, 2010

  • 733 Answers

SOURCE: my stereo went into protect mode after i was

turn radio on and unplug speakers one at a time if the problem goes away once you unplug a particular speaker, then there lies the problem. it sounds like you have a short. Unplug the rca's going to your amp one at a time also.

Posted on Jun 28, 2011

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1 Answer

Comes up when switched on protection


Protect occurs when 1 or more of your speaker wires is touching somewhere. Power off the receiver, connect speaker wires to receiver and speakers again, power back on, should fix the issue.


Protet mode is a special diagnostic mode that starts when a fault is detected.

When in protection mode the unit is prevented from starting by protection circuit, so to prevent further damage.

Check the speakers and speakers wiring, a contact in speaker wires, or faulty speakers can send the unit in protection.

Try unplugging power cable for one hour or so. then connect cable back and see if you get rid of protect state. Sometimes accumulation of electrostatic charges inside circuit capacitors can kick in protect mode. In that case unplugging the unit from main for some times can get rid of electrostatic charges, and reset circuits by draining power completely.
If that was the problem, you will not get Protect when plugging back power cable.

If you do all the above and still get Protect, then there is a real fault.

In that case the unit may be disassembled and tested to find the fault.

If that is the case I suggest contacting the manufacturer at the number listed on the owners manual, or asking a quote on repair to a local technician.


Also use the link below..

http://www.youtube.com/watch?v=h9SPYjPBg4M

Take care..

Mar 21, 2011 | Audio Players & Recorders

1 Answer

My KDC W-3044 is shown Protect. what should i do???


If it is in protect mode then you have a short in your system. A blown speaker will cause it to go into protect mode, also if there are any power supply problems like a loose ground wire or a sketchy connection at the wiring harness it will also trip. My advice is pull the deck check power supply and ground and wiring harness, if it doesnt go away you know its the speakers.It may however need to reset and you will need to unplug the wire bundle from the deck for a moment before getting into the messing with the speakers or wires. Hopefully that cures it so test it and see. Okay if that didnt fix it then you likely have a blown speaker somewhere in the vehicle so get that replaced and rock on.

Dec 11, 2010 | Kenwood KDC-W3534A CD Player

1 Answer

MY KDC-MP3342U SUDDENLY STOPPED WORKING! IT JUST KEEPS FLASHING ...'PROTECT'! REPEATEDLY! HELP!


Protect only comes on when an RCA is grounding out, speaker is blown or the speaker wires are shorting out. Check all your wiring on the head unit and see if all are insulated with tape or better and if there's an exposed wire, tape it up. Make sure that all connections are secured. Then double-check your fuses. Check all of your speakers and their wiring because going into protect mode is the units way of saying you have a problem with your speakers or wiring.

If your speakers and wiring all check out, disconnect your radio wiring harness, and then reconnect the harness. This resets your radio, and your radio should be working again.

If you need to enter the security code, try the default unlock code of 5227.

You can also try to reset your code if the default doesn't work. Try 'KCAR' or '3051'.

Jul 12, 2010 | Kenwood Car Audio & Video

1 Answer

My denon avr1200 receiver once it is turned on goes into Protection mode. How do you reset or make work?


The reciever will go into protection mode when there is a short in the speaker wires or the amplifier was overloaded. What I would do first is verify that none of the speaker wire connections are loose at the back of the reciever or at each speaker. And verify that none of the wires are making contact with each other. Then label each speaker wire as you remove them from the reciever so you can re-install them correctly. After you have disconnected the speaker wires try unplugging the reciever for 10 to 15 minutes. Most recievers have a self-resetting overload protection switch and this should reset it back to normal. Now try plugging the reciever back in and turn it on without the speaker wires connected. It should be out of protection mode now. If it is still in protection mode verify that there is not a reset switch somewhere on the back of the reciever. If it is not in protection mode now then proceed to connect one speaker set at a time and turn on the reciever to see if it goes into protection mode. If it goes into that mode after connecting a speaker then that speaker is the cause of the problem. If it does not go into the mode after all speakers are connected then try turning the volume up. If it goes into protection mode then there could be an internal short on the amplifier or a incorrect OHM rated speakers connected to reciever. Verify that the speakers are rated the correct OHMS.

Feb 22, 2010 | Denon AVR-1200 Receiver

2 Answers

KENWOOD DECK FLASHING (PROTECT)


protect mode means some speaker wires somewhere in the car are grounded out or are crossed... find the short and it will fix the problem. try testing all of the speakers one by one from the wiring harness... you'll find the problem. Good luck.

Nov 30, 2009 | Kenwood KDC-MP208 Car CD/ MP3 Player

2 Answers

My Stereo Is Always On Protect Can It Be Easily Fixed


Protet mode is a special diagnostic mode that starts when a fault is detected.

When in protection mode the unit is prevented from starting by protection circuit, so to prevent further damage.

Check the speakers and speakers wiring, a contact in speaker wires, or faulty speakers can send the unit in protection.

Try unplugging power cable for one hour or so. then connect cable back and see if you get rid of protect state. Sometimes accumulation of electrostatic charges inside circuit capacitors can kick in protect mode. In that case unplugging the unit from main for some times can get rid of electrostatic charges, and reset circuits by draining power completely.
If that was the problem, you will not get Protect when plugging back power cable.

If you do all the above and still get Protect, then there is a real fault.

In that case the unit may be disassembled and tested to find the fault.

If that is the case I suggest contacting the manufacturer at the number listed on the owners manual, or asking a quote on repair to a local technician.

May 27, 2009 | Sony Audio Players & Recorders

1 Answer

Protect keeps flashing


Protet mode is a special diagnostic mode that starts when a fault is detected.

When in protection mode the unit is prevented from starting by protection circuit, so to prevent further damage.

Check the speakers and speakers wiring, a contact in speaker wires, or faulty speakers can send the unit in protection.

Try unplugging power cable for one hour or so. then connect cable back and see if you get rid of protect state. Sometimes accumulation of electrostatic charges inside circuit capacitors can kick in protect mode. In that case unplugging the unit from main for some times can get rid of electrostatic charges, and reset circuits by draining power completely.
If that was the problem, you will not get Protect when plugging back power cable.

If you do all the above and still get Protect, then there is a real fault.

In that case the unit may be disassembled and tested to find the fault.

If that is the case I suggest contacting the manufacturer at the number listed on the owners manual, or asking a quote on repair to a local technician.

Apr 23, 2009 | Sony STR-DE475 Receiver

1 Answer

Denon Receiver flashed PROTECTION and stopped working after plastic smell


i just had the same thing happen to me what did you do to fix it?

Dec 28, 2007 | Denon Audio Players & Recorders

1 Answer

Stuck in protect mode


Speakers shorted out, blew a fuse. Replace the unit or (cross your fingers and) open up the box and find the blown fuse.

Nov 23, 2007 | Sony STR-DE425 Receiver

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