Question about Jensen 100W x 4 Amplifier KA5 Car Audio Amplifier

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VRCD400-SDU My car stereo keeps bouncing to USB or Memory Card from the tuner or the CD player. I can't listen to music & it's getting very frustrating. Help! It worked well until I hooked my mp3 player up to it. Do I maybe have it hooked up wrong?

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Hi Theaternut,


Best guess is that your source button or whichever button changes from cd, to Tuner, to usb, to Card, is shorted, and needs cleaning.  Its like the button is always pushed.


see if you can carefully dsiassembly the reciever to get to the circuit board behind the button I speak of, and clean it.

Posted on Oct 19, 2007


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Posted on Jan 02, 2017


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Hi XX,

Let's try the easy ones first:
1. try to do a reset of the unit;
2. check that all the speaker wirings are:
2.1 connected properly following the wiring diagram;
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5. verify that the SEL is set to SUB OFF;
6. replace the CR-2025 Lithium battery of the remote.

If your concern has not been corrected after completion of the above procedures, you may need to:
a. open the unit for a loose connection and/or other diagnosis;
b. ask assistance from the manufacturer's Technical Service at 1-800-445-1797;
c. return the unit for a replacement.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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