Hi all, first post.

Using Harmony 890, with RF control set up. Works great, but one mystery.

When I first power up after any extended period of no use (maybe an hour or more), it does exactly what I want (tv on, receiver on to correct input, cable box/dvr on), and everything looks and sounds good.

However, it takes about five minutes before I can control my cable box (Scientific Atlanta Explorer 8300 from Comcast). The cable box works, I just can't control it for about five minutes.

All the other components can be controlled, both via selecting the specific activity (watch DVD, play radio, play iPod, etc...) or by selecting the specific device. But the cable box simply won't recognize any signal for the first few minutes. Then, it kicks in and seems to do fine.

Any thoughts????