my ranger RX elinchrom portable battery 'A input' started making my flash go pop with no flash and sparking blue in the bulb. so i figured my bulb died and put the other speed light into the 'A input' it started popping too. both worked in the 'B input' : and then i took compressed air : and blew out the 'A input' and it functioned again. i am so scared it's broken and just worked one more time : and i want to know what to do about it or how to asses this situation / fix this situation. i've had the kit since 2007 : i dont know the life expectancy of them. IS THIS NORMAL xo .::kb.mak::.