I have the Hobbico electric pump and thought also mine had died. Under closer inspection once I opened it up, I found the shaft spinning from the motor and not turning the pump. Once cleaned up real good, sanded and some CA applied to that shaft, it works fine now. It's worth the time to take them apart, you probably can fix it. I think too many just junk them, when all they need is a little maintenance. I have purchased a backup hand pump just in case.