I just sold a TV (Panasonic 36" flat screen HDTV set) to someone that
was working perfectly while at my home. The individual who bought TV
from me did see the unit functioning in my home with no issues using an
HDTV tuner. Upon the individual getting the set home and hooking it up
the picture size fluctuates from getting smaller to slightly larger.
This happens even when the TV is not hooked up to any input source and
just the menu is displayed. The menu gets larger and then smaller. I
have not seen this myself but I think I am accurately describing what
the individual told me.

Does anyone have any thoughts?

Thanks,
Mike