Radio repair house calls?

I have an old console stereo that I inherited from my grandfather. It’s a Zenith in a beautiful wood cabinet (I’m estimating about 3 feet high and four feet wide or so) with a turntable and AM/FM tuner. But it has lately developed an AC hum. I tried replacing one of the vacuum tubes I thought might have been the problem, but that didn’t work and, frankly, I have no idea what I’m doing. The thing is too heavy to take anywhere, and besides, where would I take it?

So, my question is, anybody out there know of a good electronics repair guy who makes house calls?