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Old 27th July 2009, 05:26 PM   #1
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Default Getting a JVC CD receiver to work

I recently acquired a JVC KD-S31 CD receiver. It will load and eject CDs, but will not play them or let me do anything else. It's like it's not turning on fully. I tested it out on a computer power supply. I connected the ACC wire, the power wire, and the remote-turn-on wire to the positive of the supply. The ground is connected to the ground. Am I missing something? Thanks.
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Old 27th July 2009, 05:40 PM   #2
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Some head units will do this if the ignition wire has no voltage. If there are no blown fuses and both the ignition and backup power wires have 12v where the plug goes into the head unit, there may be a broken connection on the connector inside the head unit.
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Old 27th July 2009, 06:23 PM   #3
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Default Re: Getting a JVC CD receiver to work

Quote:
Originally posted by DeadSpeaker
and the remote-turn-on wire to the positive of the supply.

The remote turn on is a 12V output from the JVC. Did you connect it to a 12V output from the power supply?
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Old 27th July 2009, 07:32 PM   #4
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Yes all 3 12v wires are connected to the 12v power supply. I carefully removed the circuit board and tested the wiring harness. All of the 12v wires are electrically connected to the pins on the circuit board. Nothing looks burned and there isn't any smell.
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Old 27th July 2009, 07:44 PM   #5
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Is it possible that the detachable face isn't making good contact with the head unit?
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Old 27th July 2009, 08:30 PM   #6
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the contacts look clean
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Old 27th July 2009, 09:01 PM   #7
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The remote turn-on wire should NOT be connected to the 12V supply.
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Old 27th July 2009, 09:09 PM   #8
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Quote:
Originally posted by DeadSpeaker
Yes all 3 12v wires are connected to the 12v power supply.
If the remote-on is a standard remote output (usually blue) for turning on other components, it shouldn't be connected to 12V. For testing, it doesn't need to be connected at all.

Applying 12V to that lead may or may not prevent the JVC from turning on normally.



edit: pardon my simultaneous post w/DJ
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Old 27th July 2009, 10:31 PM   #9
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On the face, do all of the buttons feel like they're in good working order (all click when pressed, none stuck down...)?
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Old 28th July 2009, 10:39 PM   #10
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None stuck. Is there something I can test for electrically?
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