Yes. I had a similar problem with a WindGallup pump from China. I bought it because it claimed to pump a wide range of things: from wings to car tyres (which not many offer). It gave trouble from the start, then the complex electronic switching mechanism went on the blink completely. I got some help from the maker initially, then when it didn't work, suddenly they would not respond to my messages. "I should have expected that" I hear you thinking, but I've had a run of successes with Chinese stuff recently and began to think they were improving their act. But I was wrong! I doubt that it's worth taking to a repair person, but does anyone know of a good electronics repairer who might try to fix it?

Faff said..
A manual pump is a good way to warm up.

Yes, until you have plenty of time :) When wind comes and I have hour or two in work between the calls, I want to get on the water as soon as possible, then electric pump do the job until I prepare board and myself.