hello gentle men and ladies , I have a HART communicators Model (475) that give error message when it is powered up and its touch screen does n’t respond to the selection of any of the given action .
I tried the following:
1- its memory card has been used in another working HART communicator and it still worked properly
2- I replaced the screen that is displaying error with the one from the working HART and when powering the malfunctioning HART it gave the same error message.
can you help me fix this problem? your contributions are highly appreciated.