Flatscreen fault. Lovely picture but started strobic flashing over whole picture! nf-1800map gr lcd monitor.?
Answers:
1st try unplugging and wait a min. then plug back in. You didnt say if it was lcd, plasma or what kind of monitor it was except it was a tv/monitor combo. if lcd it could be the backlight getting ready to go. whereas it is a fairly cheap repair and can be done by the user. just take the front of the screen off and in the bottom right hand corner is a board that controls the back light unplug it and replace with like board plug back in put the screen back on and you are set to go.
Still I would take it to a pro that has equipment to test before doing this.
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