I unplugged the power cord and tried again. same thing.
The power light never turns on.
Is there any hope for this?
It seems likely you have a dead power supply. If you can answer yes to all of these questions it is almost certain:
* Does the power light stay off always?
* Is the unit cold even after being plugged in for a long time?
* Does the component pass-through not work?
For a dead power supply on an out-of-warranty unit, you can either pay Roku to do it ($75 when I checked in December) or do it yourself. If you are inerested in the DIY route, I have posted some instructions here:
http://frequal.com/roku/PowerSupplyRepl ... Guide.html