TH0 on SB2240

problem: the original TH0 gives a cold value of 470°C
a new TH0 gives the same error.
By disconnecting the TH0, the SB2240 card gives a value of 109.8°C.

The error appeared after restarting the host. no modification of the parameters has taken place at this time.

The report identifies TH0 and the SB2240 card but names no file, test, or entry point. Start by locating those terms in the repository and comparing the reported readings before and after a host restart; done requires a confirmed cause and a documented fix or reproducible diagnosis.

Written by the indexing model from the issue text.