My Kenwood unit about six months ago started having a problem. When the ignition is turned on, the unit will open halfway (flip to a 90 degree angle straight out), then turn off. I can push the power again, it will flip open about 10 more degrees then turn off again. It will keep doing this until I am able to turn it on and keep it at about a 100 degree angle (slightly lower than halfway flipped down). Only then will it stay on. I do this every time the vehicle is used.
Is this a problem with the ribbon? or possibly a short in the connections? I've repaired computers and cars, but never stereo units so its a bit foreign to me.
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Re: KDC-X869 Face Flips Halfway, Unit Turns Off
I have worked on many of these radios and there is a lever that contacts switch to determine position of face this lever wears out and switch does not operate properly causing radio to lose its mind. This is usually the cause of this failure unless flip gears have been damged somehow. contact firstname.lastname@example.org for additional info
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HAVE YOU REPLACED UNIT? IF YOU HAVE THEN IT COULD BE THE SWITCHED / CONSTENT FEED BEING AROUND THE WRONG WAY, YOU CAN TEST TO SEE IF YOU HAVE A CONSTENT FEED WITH IGNITION OFF ON ONE OF THESE, AND A FEED ON THE OTHER YOU TURN IGNITION ON, THE THESE ARE NORMALLY RED AND YELLOW SWAP THEM ROUND, GROUND/EARTH IS BLACK, FUSE N HEAD UNIT NORMALLY BEHIND THE PLUG THAT FITS IN THE HEAD UNIT
it's a Canadian Kenwood. http://inform3.kenwoodusa.com/manuals/KDC-MPV8025.pdf
I had the 925 purchased from Ebay, but I sold the car with it.
it's probably the ribbon wire broken between the face and the unit. I know that on Ebay some they use to offer a repair for these type of units.
It's possible the flexible PCB (more of a cable, really) that connects the faceplate to the main unit has cracks in the conductors. This has been an issue with some of the older Kenwood HUs that have the MASK motorized faceplate. The flex-cable gets bent and pinched enough over the years that it eventually cracks the copper.
Alot, of the radios have a common problem with the connection from the radio's detachable face. What happens is corrosion builds up on the connectors between the pin and the connector itself. Sometimes you can clean it off with a small file. Also, some KENWOODS with the motorized face are known to have a problem with the ribbon cable connecting the face plate to the main board. The last time I repaired one I called KENWOOD and aquired the cable for about 65 dollars, what the problem is, is the cable is wrapped around a plastic white spindel with a high tension spring and places alot of pressure on the cable from the wear and tear of the face opening and it will cause strange problems such as: turning on and off, some buttons working while others don't, and the display partially turning on and off.
My wife experienced the same problem this month, December 2008, after owning the KDC-MP825 for 3.5 years (what's up with that?). It would power on briefly, the panel would move, then after 2 seconds it would shut down. After 15 seconds, it would power again, panel motors whir, then shut down. It would keep doing that while the key is in ignition.
This appeared to have solved the problem:
Hold down BUTTON , press the RESET button (you'll need a ballpen to press between the AUTO and SCRL button).
This was the procedure for getting the receiver out of demonstration mode. Maybe the cold weather here in New Jersey placed the unit into demo mode?
the kenwoods with the motorized face platesdevelop one problem with time. the flexable ribbon cable between the main unit & the face plate. as the face open & closes, over time wares out the cable. problem consists of face plate not opening/closing, display missing & and/or some or all buttons not working. note these can also be intermittent problems. typically the part number is located on the cable itself on the side where it pluggs into the main board. since you have a service manual, you should verify it in the manual.