We bought an LG OLED TV about 2 years ago. We noticed recently what appears to be ‘burn’ of text on the lower half of the screen similar in appearance to that experienced by Plasma TV sets in the past. We use subtitles when they are available on free to air channels, enjoy many SBS programs and as the volume required to combat my hearing loss is not pleasant for others in the vicinity. subtitles are a must. Have other people had this problem? Is it something discovered in testing by Choice?