Cyrus, Jim The h1pemmx models died 12:22:42 UTC June 2. At Mid X, found that portable power supply supplying the +24V to the I/O chassis had died, along with a mouse that was laying next to it. Replaced the portable supply with a Sorenson from the EE Lab (given to us by Filiberto). Power cycled the timing system hoping to get rid of the 1/2 second time difference that appears on the MEDM screens. This did not have any visible effect on the timing, so we suspect we may have to wait until we get a known good pair of fibers for timing to the mid station identified before this is cleared up. Powered up the I/O chassis and front-end computer, the h1pemmx model is now running.