IF there is no sound when the AM/FM radio is on, then it sounds to me like
you've got a bad head unit. I would try swapping out the radio.
The only other scenario where the radio would be on and playing but no
sound
coming out is if you have a blown speaker somewhere. I realize you have
tested with a known-good speaker, but if one of the other 3 speakers is
blown it could cause the stereo to not play.
"James" <jnipperxxx@[EMAIL PROTECTED]
> wrote in message
news:rIednWJnP5XBJFzanZ2dnUVZ_uidnZ2d@[EMAIL PROTECTED]
> My next step would be to see if the fm radio works and makes sounds in
the
> speakers.
>
> James
> --------------------------------------------------
> just bought an old car with a modern stereo, a Panasonic CQ-C1300U if it
> matters. The stereo turns on and reads CDs. However, it makes no noise
at
> the speakers. Any time the stereo is on, there are 12-13 mV and 5-6 mA,
> steady, at the speakers. No voltage or current when the stereo is off. I
> attached a known-good speaker and got no noise.
>
> Can anyone explain how to continue the diagnosis of this problem?
>
> Thanks!
>
>
>
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