M55C-FPI Trouble

Greetings
I will post again just in case someone might have come this since the last time I posted the problem.
My stove will not allow me to adjust the temp., meaning moving the "HEAT LEVEL" up or down.
It is stuck on one.
I have replaced the daughter bd already and I think it my be time to replace the mother bd.
It is a expensive item so I just want to make sure I am not missing any thing before I purchase a new one.
Further- Any suggestions as to where to purchase a new Mother Bd?
Thank you
PB

 

I am sure you have addressed this, but I was having trouble adjusting the heat level on mine and it turned out that the push buttons would not work. I had to cut out the plastic over the button to expose the switches.

 

A little dirty, have not done the fall clean up yet.

 

Excuses, excuses