Total posts : 45366
Hello Joe, and welcome to the board.
There are a few threads here about the TH and if you use the search function to the left you will find some interesting information.
Regarding getting schematics, everything is possible, but I think you will find that they are not available as was indicated in some of the previous threads. Also noted in these threads is that there are differences in the TH models, some being better than others.
I don’t have one so all that I write here is based on what I have read.