I built my saber over a year ago. It worked fine then it stopped working for some reason I don't remember. I am able to start working on it again to get it back in fighting condition but there are a few problems.
First off, It doesn't charge. I plug in the charger and the light on the charger stays green. I'm using a 7.4v li-ion 1050mah. So I'm thinking it is either the power plug or the battery.
Next, when I do plug in the charger this weird sound happens.
Here is the sound it makes:


Any advice would be greatly appreciated.

Thanks.

(I haven't been to these forums in a while, so I hope this is the right spot to post this.)