Hello, must of the repaire guilds I read online such as iFixit, are about fixing the charger itself. but mine problem is a bit different this is my second time my charder is fine. It is the wireing inside the plug that are loose (plese see attached pic). However, I don't seem to find a way to open it to re-solider the wires. I hate to throw away a good chager for this minor problem . Any advice on how to take it a part? Thank you.