This recent post might provide some clues concerning your problematic Panasonic DVD Recorder:
Have you done the routine DVD Drive lens, rubber hub and spindle area cleaning. If not see this post:
If your Panasonic is an EZ series model there are bugs and design flaws, some of which require the use of workarounds. Avoid using daily or weekly scheduling, e.g., MON-FRI, EVERY TUE, EVERY SAT, etc. Use actual dates for all scheduled recordings. When scheduling early a.m. recordings, say, before 6:00 a.m., schedule a brief "dummy recording" that bridges midnight, i.e., 11:59 p.m. to 12:01 a.m. ahead of the early a.m. scheduled recording. There is no known workaround for the freeze-up that occurs as a scheduled recording moves from PAUSE to RECORD. With that freeze-up the recording counter does not advance beyond 0:00:00 even though the EZ series recorder appears to be recording. Press the RESET button behind the fold-down front panel to regain control after a minute or so of scrolling zeros and other goings-on.