Hmm, I have error 4 too. When I first called, I wound up on some automated troubleshooting where they said they were sending a reset to my box and I should wait 20 minutes. Didn't do anything. When I called the next time, they said Error 4 meant they needed to send out a tech. It could be low line signals. We had noticed some spotty digital picture a few days ago also. Then, a few hours later, my Internet went out. OK, so I figure it is a poor signal and when the tech comes he can fix it.
Next day (gee, I got a next day appointment and on Christmas Eve no less), the tech comes out, tests the line at the digital box and says it is fine. Did some diagnostics and voila, on demand is working. Internet was working too (but had been going on and off a bit before). He said that there was something mixed up in how the lines were set up, he had checked it and fixed it before he came in. He said they could have fixed it in the office. I didn't quite understand.
Then, about a half hour after he left my kids came home and wanted to watch on demand and it didn't work (and the internet was out again). I'm not sure if they are related or what was going on. I called Comcast back and they said that the Error 4 was something that could be fixed in the back office and they were sending in an order and it could take 24-78 hours to get it fixed. (no VOD on Xmas :-( ) And they would send a tech for the Internet as my signal strength seems low.
A while later, internet comes back up and my kids are able to get the on demand. While they are watching, the internet goes down and up and down and up (it even went down as I was composing this email) but my kids are still able to watch the in progress on demand.
I really wish I understood what ERror 4 was and why they said it wasn't a signal problem and if my Internet and tv problems are related. I wish someone in Comcast could answer these questions without sending out a tech.
Biggest problem is that when the Internet is out, you can't write in to the support forum!
