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Was working fine, turn car off then back on and no light display in radio. Radio is completely shut down and won't restart.

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You most likely have caused a power surge when you flipped the key an it has fried the amplifier circuit of the radio. It in turn has caused the failure of the voltage stabilizers which has effectively killed the unit.
To confirm this all you have to do is to check if power is coming to the unit when the contact is on - test it with a simple voltmeter on the fuse and its holder situated on the power wire coming in the unit .

Posted on Mar 17, 2011

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Posted on Jan 02, 2017

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