RFM12Pi on Raspberry not work

good morning

I have a problem with the operation of Raspberry, since last month to a temporally there was a sudden power outage does not work well.

The system after a couple of days of operation is no longer receiving data from Emontx, after several checks I saw that led to the expansion card RFM12Pi v2 868Mhz no longer flashes.

If logging in via SSH and rebooted the system, the situation does not change, I need to shut off the power and on again, then everything returns to work for a few days can the problem returns

I also tried installing it on a sd Emoncms new, but the problem persists.

What can it be? I have a hardware problem rather than software