Question about Sony XR-CA370 Cassette Player

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Radio not working

I've just got a new car and attached the XR-CA370 to power - but I can not get any lights or anything on the display.

I have followed the connection guide from SONY and connected the black cable to earth and the red and yellow to the 12V+.
I have tried just the red to 12V+ and press reset, nothing.
Just the yellow to 12V+ and press reset, nothing.
AND both red and yellow to the 12V+ and press reset - NOTHING!

Any ideas / help / advice?

Posted by on

  • Bruno58 Feb 03, 2008

    I had already checked the power supply, earth and fuses. In fact I even plugged in a cheap radio and that worked fine. My nice SONY XR-CA370 was working fine in my previous car and I thought I must have wired it up wrong or had to do something to get it powered up (I don’t think it had a code?).

    All I’ve done so far is connect the red and yellow cables to a good battery (+ve) and the black cable to the –ve. I then pressed the reset button, as per instruction manual, and attached the front panel – no display and no lights. I cleaned the contact on the panel and repeated the above steps - nothing.
    I tried pressing the OFF and indeed every other button, several times – no display at all.

    I was rather surprised to get a voltage from the yellow cable and earth – with no car battery anywhere near. I assume it has a battery (small black square on the circuit board?) or capacitor somewhere. I have taken the radio to bits and cannot see any obvious damaged capacitors, shorted resistors or bad solder joints.

    I was just hopping that someone would say “press X” or attach cable Y, but I am beginning to agree that the radio has died. It was kept in a box for a year or so between cars and now it seems I may have to burry the poor little thing I that box.

    Thanks for your help Bear40.

  • Bruno58 Feb 04, 2008

    Thanks again Bear40.

    I do not remember that this radio had a code, but you could be right. Nothing in the manual?

    Do you have any idea how I go about entering the code (if I ever find it)?

    I've had radios with codes before but they always displayed CODE or something on the screen, this one is just totally blank,

    Thanks for you help but I think this one is going in the bin!


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Have you made sure your power source has power?
Next check your inline fuse if it has one.
Make sure you do have a good ground.
If none of these solutions work you most likely have a bad system.

Posted on Feb 02, 2008

  • Bear40 Feb 03, 2008

    It has a removable face if you removed it before disconnecting the power you should have to enter a code to get it to work again.
    It is part of the security feature of the unit to keep people from stealing your deck and placing a different face on it.

  • Bear40 Feb 05, 2008

    you know you are right you don't have anything at all I would say your radio is gone.


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