If you have an LCD tv, it could be IR interference with the remote. Try powering the tv on about 10-15 minutes before using the remote to remove the screen saver. If it works then you'll need to change your remote to UHF.
hi! my name is michelle and i've been reading some of the forums on here for a while and decided i might as well join since i use it so often. i think there's plenty more to learn and i hope i get the chance to help some people out.