Question about Kenwood KDC-MP228 CD Player

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Will not play

The radio comes on but will not play anything through any of the speaker wires. I can here everything working,"the cd is turning,the tuner stations are showing up."The cd player is also ejecting every cd i put in it "original or burned" Thank You, rick217

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Re: Will not play

On the front panel, look for a tiny pinhole and insert a pin while powered up to reset

Posted on May 27, 2007

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1 Answer

Last night I was playing a CD and hit a bump and the CD quit playing and the word PROTECT started flashing and now I can't get anything to play or get that PROTECT off there.

Check wiring behind the radio itself, also check speakers and wiring for them. When a radio or an amplifier goes into the protect mode it is protecting itself from an electronic short. If it turns on properly and has been for some time it is not the the power wires, but may very well be a bad speaker or a connection to that speaker.

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When playing cds in my sony cdxgt500 the sounds come throught the door and rear speakers fine, but not through the subs. everything works as it should while playing the radio.

Hello.... it sounds like you have the remote wire for the amplifier hooked to the solid blue wire behind the radio. You need to hook to the blue/white wire behind the radio. What happens is that the solid blue wire turns on the power antenna when you are listening to the radio and it turns off (lets the antenna down) when you listen to a cd. There should be a blue/white wire that is the amplifier turn on wire that will stay on as long as the head unit is on. Hope this helped!

20 year car audio/video installer
Bay manager

Apr 06, 2011 | Sony CDX-GT500 CD Player

2 Answers

Disc can eject and be inserted but display does not light up, none of the buttons do anything. tried a different deck and it does the same thing the display dosen't work and no music plays. i am thinking...

It sounds like they messed up your installation. You can confirm their work by verifying that each wire was attached properly.

2005 Pontiac Sunfire Car Radio Wiring Diagram Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
Car Stereo Amp Trigger Wire: Pink
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Click on this link for a PDF of the installation instructions of the radio (If you don't have the installation guide that came with the radio).

Illumination is the grey wire from the car to the orange with white stripe from the radio.

I suspect that the yellow wire from the car is not connected properly. When the orange wire (constant power from the car) is attached, but not the yellow wire you can insert and eject cds, but it will not turn on. Constant power is used for maintaining the clock and preset radio stations.

If everything looks correct, I would take your car back to the installer and have them correct the issue.

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bad connection in one of the speaker wire.


1 Answer

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It sounds like you have a bad ground connection. You need to take the radio out and check all the connections. I bet you have a loose one somewhere. That is what the problem was with my bronco

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There nay be a wiring issue with your amp. When you are running a CD more power and sound quality is envolved so the amp works harder. Check the amp make sure everything is where it should be.

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1 Answer

Plays radio not cds

You may have Power antenna and amp remote turn on wires switched. Your system may be looking for turn on signal from radio and only gets it when am or fm is on because power antenna wire is hooked up instead of amp turn on signal.

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