2006 Toyota Van

Electrical problem
2006 Toyota Van 4 cyl Front Wheel Drive Automatic 60000 miles

The problem is that the battery went dead and a mechanic took out the dead battery and started the van with a good battery and with the engine running he replaced the old battery and now my car stereo which is a touch screen fold down pioneer deck folded down and the radio nor CD nor DVD is not working so can you please help me? Your help will be greatly appreciated. There is a picture of the deck and another of the van .

February 2, 2010.

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