Happy new year to all of you .
I have tested the genuine Fan PCB Tony sent me
and found nothing wrong .
-It’s a genuine 2 speed with no faulty component
The results:
-Same test conditions as the 3 speed ,
in percent of duty cycle:
(I don’t know the exact correlation table between temp and duty cycle)
3speed genuine
Low 15%
Me 40%
High 70%
Tony' 2speed genuine
Low 15%
High
75 %
AFTER MODIFICATION for his peace of mind
(one resistor value changed)
Low 15%
High
65%
In these conditions Tony has measured:
1st Speed: On 97C Off 95C
2nd Speed On 110C Off 106C
So no Wonder that 75% could be 115 C or more ?
I have not yet received those from Steve ;I’ll confirm soon .(i guess)
If they have the same behaviour ...
Mike