[Charlie]

I had a increasingly noticeable problem like you're describing about 5 years ago. If the central air or heat came on, I'd lose width on my sets. The washing machine caused problems as well.

The power transformer on the pole outside only services my house. That tranny was pretty old... even starting to show a lot of surface rust. I called Entergy, and they came out to have a look. At first glance, the guy said it could be the problem. He told me he'd come out again with a device to put it under a heavy load and determine if the tranny needed changing. A couple of weeks later, I went to sea and was gone for two months. When I returned home, there was a brand-new tranny on the pole, and the voltage drop issues I had been experiencing completely went away. No problems since then.