No power on a Viewsonic VG920

Sharing my experiance and thanks. Had a dead VS VG920, no power up, no LED. Found this forum via Google and followed this thread. Tested U406 by shorting bottom pins and pressing power button several times and got some action. I then popped off U406 lower right as facing it and the monitor works perfectly. I reckon if it acts up more I'll replace the transistor then. But it seems that it functions acceptably without it. Thanks everyone! I will be bookmarking this site!