Troubleshooting the 17 series gears make you feel like a robot, it's almost always the same cause for every problem out there, what you described sounds like a bad connection on one of the chips/heatsinks, due to bad soldering in most cases, at least based on my personal experience and the data I collect from research and asking around, a chain that shows 0 asic in most cases has a fault chip number 1, so for your case with the T17, you can use this image to identity that chip.



Keep in mind that it's not always chip 0, the solution to this is to identify the bad chip/heatsink, usually, if the soldering is too bad and just about to fail, applying side pressure using your finger/s can be enough to remove to the bad chip, you have to do that on the 30 chips that have the larger heatsinks and not the once at the back, and once that chip falls off, you have to resolder it, and that is a whole different story.

Also if you are lucky, applying some pressure at the top of all 30 chips (pressing them down while the board is flat on a solid surface) will help with the connection, as weird as it sounds, it does work at times, also the chip could eventually re-solder itself if kept under heat coming from the other working boards, but it is unlikely, so try the pressure trick, if it doesn't work, you will need to remove the bad chip and re-solder it.



If I were to cry over every board I lost on shitty bitmain gears, I would have caused floods that will sink the other working boards  , losing a board or a miner is something you should get used to when dealing with bitmain gears, sadly I have only released this a bit too late, but better late than never, no more 17 series for me.