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oem sub and amp not working b5 facelift

Discussion in 'A4/S4 forum(B5 Chassis)' started by lakerko, Jul 8, 2013.

  1. lakerko
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    lakerko New Member

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    [Jul 8, 2013]
    Hi,
    I have problem with my oem sub and amp. It´s not working for long time but I want to solve it now. But I don´t know where is the problem. I have the RNS-D navi plus, 4 speakers and sub in a trunk. I tried to measure the voltage, when radio is turned off i can measeru 12V on connector to amp but when I turn on the radio there is 0V. Where is the problem?
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