I am back to testing.
I am using a cat5 cable to monitor the burning chanber.
Not just for the max6675 but also two DS18S20, one rele and one servo motor.
The cables i was using for the max were:
Ground- Green and white
CS- Orange and white
With this configuration the code from post #63 was not running.
Today I exchange the Blue and the Orange/White wires and I got this result
So i belive the problem is the twisted wires inside the cat5 cable.
Could this be the reason ?
If i use only one wire from each twisted pair could this solv my problem ?