I have an ML2 that has quit working. I had 2 of these for some time running with an extra USB fan blowing on them in addition to their own fans as an extra measure of cooling. The fan on the unit still works when I swapped it to the other working ML2 and vice versa.

Is there any other testing that can be done to see if this is completely dead or still salvageable?

Not sure if this means anything but when I plug it into my USB power monitor the screen blinks rapidly.