Hi guys, my problem deals with turn off/on my Harmony gxt. It often happens that when i disconnect power cable - or i turn off my power strip - and then i turn it on, the pedal does not work. All leds are switched on, or it appears a number or a letter (U or A) at the place of the number that mark the presets. I have to try one more time and, after several times, it restarts normally, but it sometimes does not work even if i try several times. This is the second Harmony GXT that gives me a similar problem (the first one had the problem with leds that started flashing all together): is it possible i have some failure in power sistem?