20251111
========
mcms in use on smalltpc:
mcm0 : mcm91 traceid=4611  chip# 253
mcm1:  mcm90 traceid=2214  chip# 295 (ped=0 for channel 92)

Extra external mcm:
mcm2:  mcm32 traceid=2A13 chip# 231

replace mcm1 with:
mcm1:  mcm92 traceid=6213  chip# 282

run 1 : pedestals before replace
run 2 : pedestals after replace OK
run 3 : pedestals stable temperature OK