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Hi I decided to break open my softheat controller and stumbled on this forum. I am dealing with Ic after 25 years so not following from which end I should count the pin # 2 see my board with tc25B1-04 I couldn't open datasheet as the domain no longer exists granted this thread is 5 years old in 2016 btw there are some faint letters on the ic can't read now but will revisit if needed for diagnosis
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