I have a Partner Messaging module R7 that is sitting in between an ACS 308 expansion card on the left and an ACS processor on the right, all housed in a 5 slot carrier. The R7 properly powers up and I get green lights across the board, then after 10-30 min the R7 light goes yellow, causing the two lights on the ACS cards to go from solid green to flickering green. This also causes all of the phones to shut down and have no display. I have tried re-seating all three of the cards in the 5 slot carrier, but to no avail. Any idea what might be going on here? Thanks!