Question about Pioneer DEH-P4700MP CD/MP3/WMA/WAV Receiver

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Faceplate not working - will remote solve problem?

Recently, the faceplate for this unit (that is, everything but the volume knob and readout) stopped working - all functions - forward, reverse, EQ, on/off are not functioning.  I am looking to replace the faceplate but they're expensive (even on ebay).  I lost the remote (so I can't test it) but found a few inexpensive ones on ebay, one of which I'm getting ready to purchase.  My question is (before I spend unnecessary $), will a functioning remote override a non-functioning faceplate or do I need to just bite the bullet and replace the faceplate and/or the entire unit?  Thanks for your help....

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I had the same problem for weeks. what i did was unplug the LCD film strip from the inside the faceplate and boom. IT WORKS!!
No repair needed!

Posted on Nov 27, 2010

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PLEASE FIRST CHECK THE FACEPLATE TO HEAD UNIT CONNECTIONS (WHERE THE FACEPLATE CONTACTS THE HEAD UNIT ).
THEN IF U ARE SATISFIED ,REPLACE THE ENTIRE RECEIVER.

Posted on May 31, 2008

I have the same problem, a remote will not work... its happened to me at least 2x before and around half a week later after constantly pressing buttons while im driving the faceplate kicks back on. in the meantime i just make a good cd to listen to as i primarly use my ipod with it....ive also tried disconnecting the battery before but that still doesnt work.

Posted on Aug 21, 2008

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On a audiovox vm9312 I lost remote and can't turn


The VM9312 has a volume knob on the unit's faceplate. Just rotate the knob on the left (a little below the optical disc D slot) clockwise to increase the volume. Turn it the opposite way to lower the volume. (If you have the knob set to the maximum volume and then lowered the volume with the remote, you may need to reset the unit; see below.) If you push in and release on this button, you press Enter or confirm a setting when you are in any audio settings menu.

If the volume control isn't working, check if the mute is on. Press once to toggle the Mute. The mute button is just below and near the right side of the optical drive slot.

If you still can't change the volume, check if you have the wiring correct and no shorted wires. Look for damage at the speakers (or evidence of mice chewing on the wires). Also check your audio balance. See the manual page 12 here: http://www.voxxintlcorp.com/docs/common/VM9312/VM9312_OM.pdf . You may also want to try a system reset. (Press and hold the reset button for a few seconds by using the tip of a ballpoint pen in the little opening at the lower right hand side of the faceplate.)

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1) Turn on the car.
2) The faceplate rotates out and the CODE - - - - prompt appears.
3) Press >>| and Auto keys simultaneously on the faceplate and hold for 4 seconds. (If the faceplate rotates back into the console push on the upper left top edge of the faceplate and it will flip back around. Press the Eject button and then try it again.)
4) The screen will still say CODE, but the - - - - will disappear! When this happens press the 5 key on the remote twice and it enters a K on the display on the faceplate. Hit the >>| key on the faceplate.
5) Press the 2 key on the remote three times and it enters a C on the display on the faceplate. Hit the >>| key on the faceplate.
6) Press the 2 key on the remote once and it enters an A on the display on the faceplate. Hit the >>| key on the faceplate.
7) Press the 7 key on the remote twice and it enters an R on the display on the faceplate. Hit the >>| key on the faceplate.
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Thank You For Using Fixya.com Please Don't Forget To Rate My Answer

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The problem is the flexible wire strip that cracked. I just had the same problem. A guy has them on auction on e bay. Type in model number and flexible replacment for search.

Fix by.
1. Unscrewing 2 the two screws that connect faceplate to motorized flip bracked. One on each side.
2. Unscrew the screws that are connected to the back plate. Plate directly behind faceplate with Blue LED.
3.Unclip backplate by sliding Deck out 1 inch. Two clips on each side.
4.Unclip the waferboard/circuit board from the back plate.
5.Remove Flexible wire band that connects the faceplate to backplate.
6.Attach new flexible wire band to deck then to face.
7. Reclip everything, Rescrew everything.

Whalah it is fixed.

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1 Answer

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Although I can't check this fix works for 1 month, a really simple explanation and fix was offered.

The rotary knob/control has 2 contacts, which when the knob is rotated c/w or anti-c/w it generates a pulse. The diagnosis is that as the remote still works, the PCB & volume circuit is fine. What is likely is that the 2 contacts/switches have become dirty or clogged.

SUGGESTED FIX: Take head unit faceplate apart to access PCB & rear of rotary control (4 screws). Spray WD40 into rear of volume control and rotate liberally to clean contacts. Dry of with lint free cloth, tissue or air dry.

I am confident this will work and the volume control will function again.

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