HDMIReset720p
From WikiDLXTV
HDMI resets to 720p after standby
If you experience your HDMI connection going back to 720p after standby or random blank screens (no input), here's a quick fix for it: Simply carve away the excess plastic on your HDMI connector and replug it in you wdtv. The extra connector size will make a difference.
BEFORE -----------, <- plastic |----, | | <-metal |----´ -----------´ AFTER ---------, |------, | | |------´ ---------´
Details over here: http://forum.wdlxtv.com/viewtopic.php?f=3&t=6159&p=51453#p51156