Will a rc 18s work v20? - Bose RC-18S Remote Control

Check its infrared emission first. As it is new, the only possibility is with the failure of infrared LED inside it. If you wish to get more details about how to check a remote control, check this link, and pull up older posts there.

Replace its infrared emission LED. It is weak, and so the signal out from the remote control too.

Hello
The intensity of infrared rays emitting from it may got weak. Rplace its infrared LED at its front by same type. OK.

Assuming that replacing batteries makes no difference the remote has broken.
Buy a replacement from Bose or buy a 'universal' remote from any electrical store. With the latter you will need the appropriate code to link the universal remote to your equipment. Try this website for remote codes http://www.xdiv.com/remotes/

Huh?
Hahahahahah!
Sorry, can't stop laughing at your question!

Of course there is battery in it, where could it get the power to activate those electronic circuit!
Taaah!

instructions for the RCV1T-27 are contained in the manual for the Lifestyle V-class instruction manual (V30,V20,V10) in the link below: http://products.bose.com/pdf/customer_service/owners/og_ls_vclass.pdf

the electric cord id also an antenna. do not let the elctric cords touch other electric cords or it wil have interference.

Hi here is a link to the manual for the rc-18s

look at http://www.remotecentral.com/cgi-bin/mboard/rc-harmony/thread.cgi?6343

Have you tried changing the codes in the system setting?