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I have a 2002 Ford Focus with a CDR 4600 radio. The radio has no audio output on the AM band. With the volume turned way up I can just hear a hiss. In the FM bands, when I first turn on the ignition with the radio on, I get good audio but at some time later the audio disappears. Leaving the radio on, later the audio will return for short periods of time. I have taken the radio out of the dash and turned it on with the same results. Jarring the radio when it is on or off seems to have no change in operation. One thing puzzels me, some times when I turn on the radio via the Volume push button, a display of "1hr" will appear for one or two seconds. This happens when no audio is heard. Any relation?

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if you installed an aftermarket antenna you may have to splice two wires to make full connection, email customersupport@discountautoantennas.com and explain and they may be able to email you instructions for a solution you may not have it grounded properly.

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SOURCE: 75-822 cb that has extremely low audio output

Hello..if you can try to connect a external speaker or phones..if the volume is ok..than i think it is time to replace your internal speaker..pse tll me....good luck...Ron

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Replace the 15 amp spade fuse in the back of the unit. See if that get you going again. If that doesn't do it then check your wirin Black goes to ground, Yellow is a constant hot, Red is a hot trough the fuse box, Blue is for your power antenna if you have one, the Orange with a White Stripe is to the Illumination and is also hot.

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