As you can imagine, TV stations are fielding all sorts of calls today from people mystified by the sudden disappearance of their picture.

But CBS3 news operations supervisor Chris Brady managed a light moment on the DTV switch. He personally walked one woman through her converter box hookup and got her to rescan it -- a 30-minute process in this case.

Assured she was good to go, he asked: "So, is your refrigerator running?"

To which she quickly answered, "Yes."

"Well, you better go get it."

A pause -- and then they both had a good, long laugh of relief.

By the way, today's DTV switch spells the end of 87.7 FM as the analog audio signal of 6ABC, a phenomenon that Philadelphians have observed since the late 1940s. No more listening to Wheel of Fortune on your drive home.

(Post corrected.)