I have the same monitor with the same inverter board (Benq 48.L1A02.A00). Which is toast. Monitor doesn't respond/turn on at all. Q812 was absolutely fried, and had actually lifted some of it's traces. So, I know so far I need to replace that part, 2 C5707s (shorted)(and i may replace all 4, just 'cause), resolder all 4 xformers (all 4 have cracked solder), and replace all the caps. Once that's done, check other parts around the damage, and see if there is any other questionable parts. Sheeesh.
The alternative is buying...
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