Question about Pioneer FH-P4400 CD / Cassette Player

1 Answer

Audio quit suddenly

I recently installed this unit in my car and had finished the installation with 4 speakers and the unit was playing just fine until I walked away from the car and the audio suddenly stopped. I went back to the car and looked at the unit and it was still on and everything seemed to be in working order except for no audio. I turned the unit off and on again and reset the reset button on the front to no avail. I then removed the unit from the car and before unplugging it I checked my plug connection and it was good. I wiggled it a little bit to see if I could get any sound but that didn't help. I then disconnected the plug and I checked for continuity of all of my speaker wires and they were all good. I also checked for proper voltage on both the red and the yellow wires and they were good. One thing that I found interesting is tha when I was reconnecting one of my speakers I noticed a faint but distinct static from that speaker. I also tried connecting a known good speaker to all of the speaker wires one at a time but got nothing. That's about all I know to do aside from tearing into this thing and visually inspecting things for anything burnt or cold solder joints, etc. That's as far as I'm experienced to go so I think it's safe to say that I'm at a total loss for what could be wrong. Any help would be greatly appreciated.

Posted by Charles Calhoon on

  • Charles Calhoon Apr 14, 2007

    Where are the "middle legs" of the pre-amp located on the unit? Is this at the plug on the back? How do I know which ones are the correct ones? After I check these, if they turn out to be bad, then where do I get new ones from? Thanks.



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Sounds Like your pr-amps are shot. You may have incorrectly wired the power lines up. If you are handy with a meter and check the middle legs of the pre-amps and see that you have continuity one way and none the other. If this isn't the case then they are shot or whatever ones dont pass this test. pop them out and order new ones. About $20.00

Posted on Apr 14, 2007

  • Anonymous Nov 14, 2007

    Sorry about just getting on this old problem,

    You should see 2 black squares in the back when you open it up, near the power wires. its about 1/2"x1/2" and screwed into the metal chassis as a heat sink. It will have three legs coming off of it.

    As far as ordering new parts try I used to order from oren but I had an account back then for a business. Not sure if they will deal with average Joe.



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