Sansui COM3101 13" TV/VCR "dew screen" Questions

...DEW" the screen is displaying a message "DEW" I do not know waht this means and I can't get it to turn off It seem the remote has trouble progarming tv stations with this message on the screen DEW on ...

...with them, Vertical seems to flip. This TV is on a screened porch an is exposed to moisture (fog, dew, etc.) as well as cold. It does "crackle" a bit when switched on, so I don't know if that may ...

...DEW" mean on the screen. TV/VCR combo model GOJ 12330 I plugged it in, it comes on, channels change, although it is not hooked up to antenna, cable or sat, vcr engages, have msg on bottom left corner ...