Two things come to mind,
1) something blocking the sensor on the TV/Remote, like a finger print, left overs from tea, etc
2) something else is giving out IR interference and thus causing problems.
So try cleaning the TV/Remote sensors and then try using the remote with it directly in front of the TVs sensor while placing your hand around it to prevent anything else seeing the sensor.
I do know some plasma TVs and lights cause interference with Wii remotes which work off IR.
Oh and lastly try fresh batteries, the remotes light can blink even when the batteries are half dead.
I have an LN40a550 LCD tv. I have had it since August of last year and it has worked fine. I run Dish network (box is a 722 DVR?) It runs the tv in our bedroom as well (metal antennae).
The Dish functions on the remote work just fine all the time. When I try to turn the volume up or cut the tv on or off sometimes, it just doesnt work. The remote is lighting up, but the sensor on the tv is not blinking like is used to.
I tried the samsung remote thinking it should work, but it does the same thing. If you hold it long enough, it will finally start to work.
I just want this to work. I have a super nice tv, and I want it to work properly. We just got a new tv in the bedroom. Its an insignia 19 inch from best buy. Not sure if that has anything to do with it.
Please help with any comments you may have. I tried resetting the samsung remote by holding the power button for 60 secs last night. That did not work though.
I am just wondering if I need a tech to come and replace something.