Question about Dual XD-7500 CD Player

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This radio has no power.

The connections are secure but none of the buttons work nor does the faceplate open.

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Make sure you check the fuses. on the door panel and under the hood. usually with any car their is 2 radio fuses. one under the hood and one by the driver side door. a blown fuse could be an easy/fast fix.

Posted on Aug 13, 2008

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Unit has power and lights up. None of the buttons work and cd wont eject. The CD eject button turns the unit off but won't eject the CD. Cannot change the functions. Have reset the unit and checked th


Remove the face plate and clean the contacts on both the head and the radio. It sounds like a bad connection, The base and head use serial data to talk to each other(control).If one of these connections are bad the unit will not work properly.

Oct 06, 2014 | Sony MEX-BT2900 Bluetooth Car Stereo with...

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My KD-LH810 turns on and plays the cd that is in it but the faceplate does not come on and it continues to play the cd - I cant turn it on or off and none of the other buttons work on the faceplate work so...


wipe the connection where the face connects at i had the same problem and it works fine after cleaning the connection and i will guess the power light itself is still lights up and no other button lights or the screen itself if that is correct then u most likely just have moisture in the connections try wiping it with a dry soft cloth

Oct 27, 2010 | JVC KD-LH810 CD Player

1 Answer

None of the buttons on the faceplate seem to work except OFF. The remote works and still can control all functions on the radio. I have read the manual and don't see anything about the faceplate locking or...


check the gold contacts on the back of the face and the unit also check the release mechanism theres a little black button (not the reset) that when face is pressed up against it it activates power to the gold contacts thus powering the buttons

Dec 14, 2009 | Sony XPLOD CDX-GT200 CD Player

1 Answer

No power to Kenwood KDC-4019 faceplate


It sounds like the stereo does not have the "ACC" voltage. It could have blown a fuse. The "ACC" voltage goes to the red wire on the harness and you get that voltage turned on only when the ignition is turned on in the car.

The symptom of the disc ejecting and nothing else works is an indication that only the constant voltage for the yellow wire is connected. Check the voltage on the red wire with the car turned on, if you have that 12 volts at the red wire, then you need the radio serviced.

It is not very likely that the faceplate has gone bad. Just because the radio will not turn on is not an indication that the faceplate is bad. It could be a voltage regulator in the radio or a circuit trace is blown, or almost anything else. There are many reasons that the radio would have the problems you describe and it can only be found out for certain by troubleshooting the radio on a test bench with the proper tools. If you have a multimeter and a power supply I can guide you thru troubleshooting the radio and even email you the service manual in PDF format if you would like to take a crack at it yourself.

Let me know how you want to proceed.

Dave

Oct 25, 2008 | Kenwood KDC-4019 CD Player

1 Answer

Wont change channels


First, try resetting the faceplate CPU by shorting the proper pins on the faceplate to radio connector on the back of the faceplate with a piece of wire... They are marked on the connector, if this fixes it for you, enjoy!

If that doesn't work, then remove the back cover of the faceplate and check the faceplate connector itself for bad solder joints. As a matter of fact, check the entire radio for bad solder joints before looking any further.

I bought one of these radios a short time ago; Everything worked except for LSB.

I was told by the radio shop I bought it from that I'd have to wait until June to get it fixed, so I opened it up myself to see if it was something easy to find/fix, since I felt that if it was anything major it wouldn't be able to get AM or USB either.



In my case, I found bad solder joints on the faceplate connectors and a bad solder joint on one of transistors attached to the heatsink.

Once I fixed those two things, it's been a great little radio.

Be sure to reset the faeplate after resoldering and assembling, to clear any errors from the CPU.

Apr 05, 2008 | Midland 79-290 120-Channels Base CB Radio

2 Answers

Kenwood KDC-519 Faceplate Problem


Detach the faceplate and look at the electrical contacts on the back of it for damage/dirt - you can spray it with electrical contact cleaner. Do the same to the contacts on the head unit - it sounds to me like one or more of them are a bit loose or otherwise not working properly.

Feb 23, 2008 | Kenwood KDC-519 CD Player

1 Answer

Face does not come down and remote won't work


EXTREMELY common problem for these units. The faceplate ribbon cable has gone bad and needs to be replaced.

Sep 20, 2006 | Sony CDX-M800 CD Player

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