Usually shipping to China isn't cost effective for us in Canada.
I think you have answered my questions. There is no video to disassemble it. If I ever receive another broken unit, I'll contact you to see how you want to handle it.
I'm pretty sure that was just added as another possible fix.... without intending to suggest that there was anything wrong with your solution.... indeed I am about to follow your suggestion and add a ceramic cap to a proto board.