I have the similar problem as described by tbrady01, only with a new Mitsubishi 46" LCD and the Time Warner cable/DVR remote. Remote works sporadically when TV is on for a while, but not at all during first 5-10 minutes after TV turn on. Surely someone's got a fix to this? Would it be better if I moved my cable/DVR to a differnt location than under TV?
Yes, try that. It is easy to do and doesn't cost anything. You've tried new batteries in the remote as well right? There are two types of remotes, IR (Infrared light LED is used) and RF (Radio Frequency). With an IR unit I do not see any way there can be interference as long as you don't have an IR lamp around the TV and TW DVR box. On the other hand, with RF, depending on where you live and other factors, there could well be RF interference. You'll have to locate the interference and remove it. In this day and age, things such as LED and CF light bulbs DO cause RF interference. If you use these kinds of lights in the room AND you know that the remote is an RF remote then try turning all the lights off in the room and try again.
SOURCE: cable box remote doesn't work when tv is turned on.
I am having this same problem with our Mitsubishi LCD Flat Panel TV, Model LT-46246 ans our Scientific Atlanta remote cable box, same model as yours. We cannot use the remote at all to change the channel. I called Mitsubishi and they said they have never heard of this. I find this incredibly hard to believe. Time Warner, our cable provider says that it is not the box because it works when not hooked up to the TV. What a pain. I would love to hear if anyone else is having this problem or has a fix for it.
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