Replacement remote for Samsung HW-D450

The sound bar and the subwoofer could of had quit working and and no longer works anymore. You will have to by a new soundbar and see if it can work.

Have you adjusted the subwoofer level? there should be buttons on the remote to adjust this level. Also, make sure you are not in a 'night' surround mode - this drops subwoofer levels a lot

Try out optical tv to in optical in your sound bar it will work.
Carl

It passes infrared signals to the TV (via an IR eye/wand) incase the soundbar covers the TV's IR pickup

don't you mean sound bar to tv?
your tv has an input and output for audio and video,find the audio output and connect the sound bar!

google it

Would have to use the optical cable probably. There are also analog rca connectors on the soundbar, but a lot of dvd players don't have rca outputs.

If no lights at all come on, then the sub is completely dead and probably needs to be replaced.

1= Reset the code again. go www. fitness.manualsonline.com or www.remotecodelist.com
2= Retight the springs contact, with pliers very well for a good contact battery.
3= Clean the contacts with special spray contact.
4= Open the remote for to clean the keypads, with special spray contacts.
5=Otherwise, you must go to the repair shop,or to buy a new ones.
God bless you