Sorry! Add a little clue. Philips 32PFL1409/93, after reading the manual again, it has the same movement as
42PFL1609/93, 47FPL1609/93
. The power supply was struck by lightning and the driver chip was blown away. The chip is an 8-pin chip, the serial number is IC903, and the power supply board number is 715G3234-P01-H20-003S. There is no way to start without the relevant drawings. I hope experts can help, thank you!