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Whining noise thru the fm receiver

The tunebase has workied very well since bought from walmart.....recently, however, ther is now a persistent whine coming thru the radio that rise and falls according to the rpm leve of my chevy pick-up....i have no clue why?....or even less of an idea how to eliminate the sound....any ideas?

thanks,

teyy gibbons

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What you're hearing is alternator whine. The frontend of the amp in your tunes is reacting to dirty power from the car and passing it through to your speakers. It's pretty common, but it's usually "caught" and remedied by stock components.

It can also a ground problem. add or check grounds.

OR

If you recently changed anything like plugs, wires then did you get RF suppression versions? If you still have the old spark plug wires, switch them back and see if the noise goes away. While not the root cause it could also be a diode is going out on the alt. or capacitor is failing in the audio system's power supply

Head to Radio Shack and pick up a "noise suppressor" kit. It'll consist of a non-polarized capacitor and an isolation transformer.

Posted on Nov 09, 2007

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