How to retire Konka color TV - android - Phones Developers

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A Konka HDTV, three no, the indicator light is on, the cover is checked, the main voltage is only 20 volts, and the main load voltage of the disconnected line is restored to the normal value. Therefore, according to the routine inspection, the line tube is not damaged, and the voltage after taking the down tube is still Very low, but the high voltage package 3 feet [power supply] disconnected back to normal, the high voltage package is broken? See the high voltage package 4 feet [grounding] a little bit of solder, not paying attention, take off the high voltage package to check, good guys, all but the ABL all the feet! ! So I decided to damage the high-voltage package, bought a package of the same model through Taobao, and waited for many days to finally arrive, so I got on the machine, and the high voltage was built up, but the screen is still not bright, how is it? The filament voltage is measured normally, and the normal and negative 14 volts are normal. Wait a minute or so, the filament is still not bright? Re-measure the filament voltage is normal, is it ... ... so the tail plate is removed, the resistance of the filament is measured, this measurement does not matter, the direct filament is broken. I still don't want to believe this unacceptable fact. I used the high-resistance file to measure the filament or the open circuit state. After communicating with the user, I had no choice but to give up the repair. It is not accidental that the filament of the machine is broken. Is it still unclear what kind of connection it has with the high voltage package? Is it possible to open the circuit with the high voltage package grounding foot and the main voltage can directly reach the filament?