Car Audio Amp not working...

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  • nelers
    New Member
    • Oct 2016
    • 4
    • Bosnia & Herzegovina
    #1

    Car Audio Amp not working...

    Hello guys,

    Yesterday I got some car amp from my friend, it's "Pioneer GM620 - (EW version)". There are two RCA plugs for input audio signal and 4+4 connector (GND, ACC, ILLUMINATION, one unused; L+, L-, R+, R-). I have power supply which I usually use to test car equipement.

    I connected ACCU and ILLUM wire together on (+) terminal and GND to (-) terminal. Also, two audio out wires from connector to speaker and from RCA plug I used PC speakers cable (3.5mm to 2xRCA male) to connect amp on my phone. So, I played some random song on amp, but I can hear no music on it. Nothing. Not even some cracks out of speaker...

    I've checked amp datasheet, found my model GM620 - EW version and it seems that everything is connected as it should be, according to the schematics provided. *I provided a pdf with datasheet of amp in attachments.

    What do you think guys? Maybe I did something wrong, or there is faulity on the pcb... If there is faulity, how can I spot it?

    Amp's PCB Back
    Amp's PCB Front
    Attached Files
    Last edited by nelers; 10-30-2016, 10:29 AM.
    Tags: None
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