I have a Jet hanging air cleaner (actually all the brands and models look almost identical to me). Its about 10 years old. My remote will turn it on but not off. Sometimes won't even turn it on. Obviously have replaced batts with fresh, no change. I read somewhere a long time ago that these remotes were /are problematic. Any fixes anybody know of other than buying a new remote? Does Jet even sell remotes separately if that's the direction I need to go? My guess is a number of you on this forum have already dealt with this issue. Thanks. Randy