I've been using my AK2 for a while but today when i fired it up i was greeted with a black screen. I've formatted the card, put the latest FW on the microSD but i still get a black screen. Occasionally, like once in 15 attempts, it will get to the menu then freeze. The SD card is fine, i've checked that. Do i have another dead AK2 on my hands? I've already had about 5 of them die on me for no reason. My DSTT is holding up better than my AK2s.... Any suggestions before i throw this POS in the trash?