Take it easy, we all have lost many gears, the failure rate on these 17 series is much more than you can imagine, I would have been more than happy if I got 6 months of all my 17 series gears, so you are not in the worst situation one can be.

Recap:

1- I assume the T17 is done with and you are going to try and solder the heatsinks?
2- You have 2*T17+ , one is fine another one has a bad control board, when you try them on a working control board you get the errors you posted in the last post? is that the case or am I missing something?

If I am on the right track, you should know that mixing hash boards from different miners will cause many issues, so while you are trying to fix all this please keep track of the different hash boards and to which control board they belong.