Chadti99 wrote on 2023-04-01, 16:56:

If it helps anyone else I had to set the jumpers as indicated to 2.7v to get a K6-3 400 working stable, and this was after replacing the caps. No post at the indicated 2.4 setting.

Did you confirm the actual voltage with a DVM?

Just for memories - original TC366 box and unboxing

https://www.youtube.com/watch?v=ASUMwRVuSnk