dvd player doesn't retain position on 2008 Chrysler Town & Country

We had the radio replaced because it wouldn't read dvds. Second radio doesn't keep the position after the van is turned off. No fuses are broken, and dvds play fine.

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1 answer
The "keep alive" memory power wire is probably not connected. It should have battery power continuously, not just when the ignition is on.
Get the installer to recheck his work.