Question about Sony CDX-MP40 CD Player

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CDX-MP40 I bought the radio second hand. When the unit was initally connected the radio played the ariel went up. So, I switched it off and placed it into the car......nothing! I have tried a cd and it takes it into the unit and ejects it so there is power,but the unit does not light up ,can you help?

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Re: CDX-MP40 - Sony CDX-MP40 CD Player Car Audio Receivers

Did you hook up the red ignition wire?

Posted on Oct 31, 2006

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You are correct, the unit powers entirely from the red and yellow leads. Your symptoms sound like a unit that isn't getting power on the red (switched) lead. The most likely cause is a blown fuse in your vehicle's fuse box.

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