Hi...I've posed this question many times...past few weeks (ago) with no response, except re manual. The infr-red sensor seems to be behind the plastic front cover, not outright noticeable as all other TV's? I do not have remote for this unit, and it works perfect as a monitor/Direct TV, et cetera, but any and all remotes I try to program and use..., none have any effect on this unit. Any help appreciated, Thanks, Doctor Dave.