My RM-Dx450 will not operate CDP-CX455??? - Sony RM-DX450 LCD Remote Control

This site is located in CA USA so we have no access to local businesses in your area, so sorry. Check the phone book or contact Best Buy they repair this stuff I am told.

Try a laser cleaner if not the laser needs replacing which is a cimple procedure.

check remote battaries / also try reversing plug pins

if you have the old belt, take it to ace hardware and get an o-ring the same size. it will work just as well.

virtually nothing except the year it was made.

go to http://www.sony.com/index.php
and buy it.
God bless you

Pretty much the only thing you can try at home is cleaning the laser lens, if the cleaner works then remember to use it now and again.
If the CD lens cleaner does not work the take it to the nearest sony tech/dealer for repair. Multi CD systems are very complicated and need specialist attention.

Hope this helps
Thanks for using FixYa

You can download the manual from the manufacturer's web site at
http://esupport.sony.com/US/perl/model-documents.pl?mdl=CDPCX455

do you know the codes or have you still got the codes you used the first time try http;//esupport.sony.com