I have an HP 1740 monitor that, when I turn it on, just remains 2-3 seconds to display and turns off completely (even the pilot). It seems to me that the problem is not in the backlight. I opened the monitor and on the power supply board, I didn't find anything visually damaged.
I measured all the capacitors with a multimeter (on the PCB, I did not desolder them) and yet only the two large green capacitors rated 150 with the multimeter in Diode mode.
I also tested the MOSFETs (without desoldering) between the drain as positive and source as negative. In all, the value of Diode mode went up.
I suspect the 1200AP60 integrated circuit, but I don't know how to test it. Could it be the problem?
I am an enthusiast, trying to learn more about electronics and how to solve.