Question about Kenwood KDC-X590 CD Player

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Kdc-x590 I have a refurbished kdc-x590 that first started distorting the sound (like a low battery radio) at no specific time and then the display willgo blank, now I get no sound at all and the only thing that goes on arethe 2 knob lights and the triangle light next to the att button. Whenthe SRC button is pressed all lights go out and no sound at all. Whatcan I do?? you can mail me at Thank you for your cooperation

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  • jaimecortes Oct 08, 2008

    Thank you for your reply:

    I have a voltmeter and soldering equipment. I will remove the stereo and connect it to a 12 volt source and give you the readings from the voltmeter, also. Should I check for any resistance, ohms, etc,on the speaker cables or any other ??
    Thank you

  • Dave DeGain
    Dave DeGain May 11, 2010

    Do you have some electronic skills such as soldering and a meter to check a few things? If so, you may be able to isolate the problem after checking a few things. If not, you really should just take it to a repair center to get it fixed. It sounds like it may have a couple of problems. The display out could be a series of surface mounted resistors on the main board that would need to be resoldered. The sound being distorted could be one of several different things. Are you using the RCA outputs of the radio for sound? If not, it could be the solder connections on the amplifier IC that are bad and would need to be resoldered or it could be a bad electronic volume control IC that needs to be replaced. If you are using the RCA outputs of the radio, it could be the amplifier that they get connected to. There are so many many different things that can cause these same symtoms that it will most likely require some good troubleshooting skills to really pin-point the causes. Please let me know your level of experience with electronics so I can determain if this is something that you can actually fix yourself. I will be perfectly honest with you about the possible causes and if they are something that you would be able to fix. You would also need a power supply to connect the radio on a test bench and be able to troubleshoot it. A multimeter is also a must have tool along with a soldering iron and solder, and also some solder wick to remove old solder with. This is definately not a problem that can be fixed without getting into the radio to check some things and most likely replace a few parts. Often, the most difficult part of the job is just figuring out what parts may be bad. If you have a multimeter, please check the voltage levels of the speaker wires coming from the harness on the radio. That would tell me if the amp IC inside the radio is bad or not. They all should be the same voltage, around 6 or 7 volts. There are 8 speaker wires, 2 for each channel. You will have a white pair, grey pair, green pair, and a purple pair. Check these voltages when the radio is turned on, even if all the lights go out you should still have that voltage there. This would at least be a starting point for me to help you.




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The first thing to check would be the voltages on the speaker wires. They should be about 6.5 to 7 volts on each wire. Then check the surface mounted resistors on the front right side of the main board. Take out the CD deck and reflow the solder on them. Make sure you do this part with no power source connected. The surface mounted resistors have "2R7" on the top of them and are located in the right front as mentioned before, while looking at the unit from the front facing you. If you do not find the surface mounted resistors it could be that I am thinking of another model of Kenwood, but I am pretty sure they are also in this model as well. Use just a touch of solder on each side of the resistors, there are about 6 to 8 of them all connected in series. After that, reconnect the CD deck and connect the power source to the red and yellow wires and the black wire is your ground, connect that as well. The display should light up. Let me know what you come up with on the voltages of the speaker wires and if the display starts working again. I do not have access to my service manuals at this time, it may be about 2 weeks before I can get them. So I may not be able to get you completely fixed up until I can get my service manuals. A schematic is sometimes the most valuable tool when fixing electronics.


Posted on Oct 08, 2008


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