Hv 40” LED smart tv, was working well but now there is no picture at all, full black screen, no light but good sound with able to channel change properly, volume change properly. My 2 yrs old kids used remote that time & after that it happened…
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remove teh back of your TV and disconnect the cable from the main board to the power board. Now turn your TV on. The backlight should be showing. If it is not, you are having trouble with either the power board or the LED backlight array. If the backlight does show you are most likely having issue with either the T-con board or the main board. Post some good pictures of all of your boards with your question. That way we can see what you se. Use this guide 在已经存在的问题里加入图片 for that
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Try shining a flashlight at the TV (get close up) and see if you can see a faint display, if you can then your backlight LED’s have gone bad and you have to take your whole TV apart to get to them. Cheap repair in some cases (model dependant).
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