I replaced both the drain pump and the circulating pump on this machine, as both were noisy. The machine worked fine otherwise. Now when the machine is plugged in, there is no power light and the interior bin light does not work, however, the drain pump runs continuously. Bin does not fill. I cannot run diagnostics because the buttons on the panel are inoperative. I suspect the control board is defective. Am I thinking correctly? Thanks for your input.