I have a Buffalo IR 100 infared repeater signalling 3 components in my cabinet. It has recently quit working. I unplugged it for a day and tried plugging it back in but still no go. I notice that when I unplug the power cord from the IR block and plug it back in the green light blinks once as I'm plugging it in. I have 3 sensors in the wall, one in the same room as the cabinet and 2 in separate rooms and everything is connected with cat5. Anyone ever experienced this or know of anything I can try to determine what might be wrong? Also I recently added a PS3 to the cabinet, could this be causing some sort of interference? I haven't tried unplugging the PS3 to see if that will make a difference. I will try that tonight.
Thanks,

Define "quit working". It does not respond to any commands altogether at all? Only certain components respond? Definitely try getting the setup back to the last known working state and see if that changes the response.

I assume also that you have checked batteries in everything and made sure the remote works when pointed directly at the components?