Infrared issues aren t brand specific whether you ve got a sony a vizio or an lg tv remote sensor problems often boil down to a few common causes. We ve had a vizio tv for at least 10 yrs we had the same problems you have been having we also purchased a universal remote control and nothing seemed to work with the codes given we discovered it may be the ir sensor on the tv itself so i opened the back of the tv using a screw driver and the sensor on the right side of the tv was dirty. My tv is a vizio e3d420vx which is known to have problems with the remote and ir sensor going out.
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First make sure no physical objects are blocking the path between the remote and the ir sensor on the tv.
Vizio tv ir sensor replacement.
Here s an easy wa.
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How to replace an ir sensor on your tv.
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