The author of this masterpiece of repair: Nikolai Pavlovich Hazov. In this section, I published because there is nowhere else, it is not a mobile device in the classic sense, but still it is a portable thing.
It would seem that with cracked backdrop (which is also called the highback) have nothing to do except throw mount and buy a new pair.
But there is a mind that is realized! First, cut out the layout of the board, examples, and then later made two tin plates are sealed with rivets.