I've come back to your thread several times to see if I can come up with an idea for you, because this sounds exasperating. The only thought I have for you is that perhaps you got a power surge during your absence and it caused an issue on your board. But it could also be the power supply that got nailed and maybe you aren't getting enough power to your board now. Have you happened to try swapping for a different PSU, if you have one available to you?
FYI I've had great success with the RVE and the RVE10 and wouldn't hesitate to go to R6E if I were rebuilding.