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Re: After car battery change, Alpine 9857 in Passat w/ Monsoon Amp = No Sound (markw123)

You need to turn the powerIC off. When the radio looses vmem, it turns the power IC off - mine does at least and it's a 9860.
hold the menu button until the menu comes up
press >> until you get to power IC
press mode
turn volume knob to change setting
press menu to finish

rock out
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