Yeelight LED Lightstrip 1S controller trouble

Hi! I have a problem with 1S controller. We tried to extend the wire between the power adaptor and controller, so we’ve cut the wire and made an extension cable. But when we’ve connected everything, we’ve found that the controller doesn’t work. I thought that we have made polarity wrong. We’ve change the polarity again but it doesn’t work at all now. Then we took another controller, and it worked.
Is it possible that the controller burned down because of wrong polarity?