I have a JVC HR-VP473U VCR that will not power on. The display works and when I plug it in, it shows the "auto" message and then the display lights up as in the power off mode but the unit will not power on when I press the power button. There is a tape in the unit and the eject button won't eject it either. Any suggestions on what to try. It's an older unit and I can probably just replace it, but thought I'd post here first in case someone has a suggestion for an easy fix. Thanks.