Question about Pioneer DEH-P8600MP CD Player

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Pioneer p8400mp hi ive just replaced both ribbons and the cd player is not doing nothing but if i take the top off and winde the face down my self it will come on then strait back off please could u help thanks

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Sounds like an initial connection problem in the ribbon (where the two ends connect)

Posted on Dec 31, 2008


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Hi, i jave just bought a used Pioneer DEH-P8400MP. The guy told me that id did not work no more and that the problem should be the whire to the front plates. Now i habe installed new whires but it still...

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It is possible that the power supply wires were connected in reverse at one time, damaging the circuitry inside.

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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

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I've a Pioneer DEH-P8400MP. I get no sound out of the ISO speaker connector, only out of the RCA outputs. This told me that there was a problem with the IC Amplifier (a PAL007A I believe). A quick check...

no it isn't obsolete and there are replacements and cheater replacements. the pal 006a,pal005a,tda 7856/7854,7386,and the cheater one that will work and you already probably have is the ic from an original delco radio off of a chevrolet radio. but it will not have a remote wire to it.

Apr 02, 2009 | Pioneer DEH-P8400MP CD Player

2 Answers

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You need to take the unit apart to fix the cable since the other end of it plugs into the board inside, it's pretty easy to take apart though. Good luck!

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1 Answer

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