Hey, I could not believe it!! Same C:31:22 error code as the rest of you on my TRV 250E...took the wrist strap off and gave it a good couple of whacks in the guts with the palm of my hand..ouch!! and the thing works again. Oh the joys of the ancient technology of brute force! This reminds me of the days when we used to give our old television a kick in the guts to get the picture to go clear and I remember that used to work too. Thanks again...this forum is worth its weight in gold.