Question about Kenwood KDC-MP535U CD Player

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Common blank screen.. but no ribbon cable

Stereo works fine, all buttons work fine, and buttons light up. However, the LCD screen is now blank.. which would lead me to believe it would be the ribbon cable.. but there isn't one. Detachable faceplate.. tried cleaning contacts, no luck. Please help.

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Re: Common blank screen.. but no ribbon cable

I dont have a solution for the problem, but my Kenwood is doing the same exact thing. My fluroscent, if it is fluroscent, is not cracked. The display come on and works fine every so often. If it were cracked, it would not do that. Any other suggestions?

Posted on Jan 23, 2008

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Re: Common blank screen.. but no ribbon cable

I don't recognise the radio model number because we use different model numbers in england but if this unit has a fluroscent display that would be my first suspect

Posted on Dec 07, 2007

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Hi there,

I also created a tutorial on fixing faceplates with 2R7 resistors (refer to my tip).

But, your unit will have a different chassis, as the faceplate is also a video display.

First you need to determine if the buttons on the faceplate are operating the various functions. If the buttons are NOT operating, then the faceplate itself (or connection to the main unit) can be considered faulty.

It's highly probable that the RIBBON cable (which connects faceplate to the inside of the unit) may be defective - this is common in some Kenwood units.

Try searching Google or youtube for ribbon cable repairs etc.

Hope this leads you in the right direction.



Dec 29, 2012 | Kenwood Car Audio Receivers

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Sony cdx-M8800 car stereo buttons wont work

There is a ribbon cable that runs all the flip panels electrics, these are prone to breakage.
I have seen some of the cables on e-bay for a few quid, and also if you google "sony x-pod ribbon cable" you will get a big choice of places to order, and get instructions on fitting.

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LCD panel on a Bose stereo in a 2002 Mazda Miata LS doesn't work!

i have the same problem... and it hasn't anything to do with the orange backligh.. it's the lcd segments themselves that have slowly started disappearing.... pressing hard on the middle of the top edge or the top left corner usually brings the numbers back for a while...

i think this is a loose connection / contact corrosion issue that seems to be common to 2002 miatas (i've seen at least 3 that have the same issue with nearly the same milage ~20k-40k)

Jun 13, 2009 | Car Audio Receivers

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Pioneer premier deh-p980bt screen went blank

Its the ribbon cable needs replacing going from the deck to the faceplate

May 29, 2009 | Pioneer DEH-P6800MP CD Player

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My radio is not responding.

Put the right bottom corner of the face to head unit,bring the left bottom corner to headunit and press gently.

Apr 08, 2009 | Pioneer DEH-P6800MP CD Player

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Black out

this is a coincedence. The CDX-M800 had a HUGE problem with the ribbon cable on the face going bad, causing this exact problem.
$14.00 and some time will put it back into perfect condition.

Jan 21, 2009 | Sony CDX-M800 CD Player

1 Answer

Power to stereo none to unit

There is a ribbon cable that goes from the display to the main board of the radio that may be bad, if you have everything connected properly and all you get is the red led, this is a possibility. No way for anybody to know if you have it wired wrong if they can not look at it themself.

The red wire is for power when the key is on, the yellow wire should get power all the time, the black wire is ground.

If you have those correct, the radio should at least turn on. If you have these right, you may need a new ribbon cable. The connector that interfaces with the detachable face must also be taken off the old ribbon cable and put on the new one, or get a new connector and just replace it. The ribbon cable does not come with that connector. It is soldered on the ribbon cable, so if you are not very good with a soldering iron, you should have a service center do it for you.

Let me know if you want the part number for the ribbon cable and/or connector, I can get those for you.

I can not guarantee that the ribbon cable is the problem, or that it is the only problem, but it is the most likely problem with that model number of Kenwood. I have repaired many of them, so I have a good idea what causes most of the problems, but I have seen times when the usual suspect is not the problem and something else like the LCD in the face is bad, or the IC that controls the display is bad. Even a voltage regulator on the main board of the radio can be at fault as well. There are probably about 10 different things that can cause that one problem, having an experienced technician is always the best way to determan the problem with certainty.

Let me know if I can be any more help for you.


Jul 22, 2008 | Kenwood KDC-MP528 CD Player

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Kenwood kdc-322 faceplate problem?

I found my Kenwood KDC322 faceplate doing the same thing(cutting out) I cleaned the contact points on this 'ribbon' behind the faceplate by rubbing the discoloration off with a pencil eraser. The lights have not cut out again.

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Sony CDX M8800 Front Panel Problem

u need 2 replace the ribbon that goes to the panel to the unit.i had the same problem with mine then i went on to ebay and found the ribbon there (cdx-m8800 repair kit)hope this helps

Dec 17, 2006 | Sony CDX-M8800 CD Player

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