tv sharp 14 inch tidak bisa dimasuki video av, cuma cabut dioda ,sudah bisa normal kembali

This TV initially broadcast normally with analog signals. He purchased a set-top box, but when he installed it, the TV wouldn't display a picture even though it was installed correctly. I finally checked and found a faulty zener diode. This video was made after the problem was discovered. To shorten the video time. Hopefully this is helpful.