I have a 55 inch JVC tv, my kids were watching cartoons today and the screen went black but till have sound, also the buttons on the back won't work, but the channel down button turns it on and off? What is wrong with it? It worked fine before this.
Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary..
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