Question about Pioneer DEH-P8400MP CD Player

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My pioneer deh-p8450mp is opening and closing/switching on and off contiuously. help

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Hey sparrow, sorry you didn't get an answer to this sooner, mine just started doing the same thing. After fidling and dismantling for an hour or so I think I have diagnosed it to being the ribbon cable which comes from the circuit board to the front most control panel is cracked (i.e. the cable that connects to the connectors on the removable face plate) When the panel attempts to open fully the ribbon cable is flexed enough to lose connections making the unit think the faceplate has been removed and so attempts to close...when it closes the connectors retouch causing it to think it needs to reopen....this is a nasty design flaw for a unit that cost me $1500 (admitedly 10 years ago but it was in a box in the cupboard for 8 of those years) !!!! Now any chance I can source this $2 part .....eek

Posted on May 29, 2010

  • johnc4 Jan 24, 2014

    Just an update, the cables are sourceable however if you are desperate, a temp fix that worked was a dab of flexible glue where the cable has cracked. This solved the problem for me till i could get the replacement cable and time to install. About two months lol. Just make sure you put the glue dab on with the cable in the unflexed position. Also new cable has been fine for last four years now.

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