When your antminer T17 is reading 'soc connect failed , kill all hashboard. It is usually because one or more of your heat sink is lose but has not fallen off yet. So you need to detach the lose heat sink and use super glue to fix it properly. If my suggestion helps you and you want to donate bitcoins to me, please send it to this address:
36Erg6tTtLjeRcc812KVF96Y4W4ZiqH7pn