wlan card configuration disappears

HELP… I got a Routerboard 153 with 2 cards: ubitquiti SR9 (900mhz) and sr2(2400mhz)..

the SR9 conects as a WDS station to a Base station radio 10km away…thats connected to ADSL internet
the SR2 extends the network to another remote office 12km away…

The setup worked great for a couple of months, but after the earthquake here in southern Peru, we’ve got frequent power outages at the base station… and this is causing my repeater stations (mentioned above) SR9 wireless card to disappear…
I have to manually re-enable it and re-configure it every few weeks …

I’ve seen other posts with similar problems but haven’t seen any solution.. Does anyone have any ideas ??