2 Dead DL2s

Last night I fired up the rig and 2 out of my 4 DL2's are only showing the blue power led and the flashing orange server led. Here's what I know so far. The screen comes on and the splash screen appears but the normal screen with address never shows and the buttons are unresponsive. No DMX control. They do show up on the network and I can access them with the CMA so the server appears to be working fine.
Tonight I pulled the covers off and the head and box card have no led's flashing on them at all. They appear to not be receiving any power. Is there a seperate fuse that may have blown? Seems strange to lose 2 of them at same time with the exact same symptoms and be something else. Any other ideas?

Thanks,
Josh