Hi, Im sorry to hear that. How old is your Stairmaster 4000pt?
Also will it respond to any button presses at all?
Hi, that shouldn't cause this problem, but anyway, the main console needs to be replaced in order to fix this one.
Its easy to do and there is no soldering or special skills required;-)
I will assist you at no cost additional as well.
The best place to get that main control console is: https://www.sportsmith.net/productsearch.aspx?dsNav=N:11164
I would call them to order this part so you are sure to get the correct one. Also they will ship it out to you today;-)
Please call: ***-***-****
In any case, I will stick with you until this is complete.
Please rate my service kindly.
Also it is the only way I am credited for my time and expertise with you.
Once you rate, I will be notified and will add your question to my priority list so you can reach me anytime until this problem is solved.
Then you can reach me by simply replying to this message anytime.
Thank you and have a great day!