Dryer just started not coming on when we push digital buttons. If we unplug and then plug it back in, it will come on for one cycle, then we have to repeat the plugging in procedure after it cools to get it to work again. I have lost the tech sheet to run any troubleshooting things. Can get digital displays to work and run on a test cycle for a few minutes, but then it won't go into a regular cycle. Any ideas?