Help needed - any HD channel makes my other tuner go out

[mika911]

I have a HR20 and a standard definition TiVo box (oldish).

Both are connected directly to a slimline dish, I get fantastic signal strengths on all satellites.

However, on my HR20, if I go to *any* HD channel MPEG 2 or MPEG 4, my second tuner on the HR20 loses signal. Any ideas?

Do you think I should replace the LNB, or all the cable runs from the dish to the HR20?

Thanks. It's crazy aggravating. ha-ha.

[poppo]

A bad BBC can cause stange problems. I had a bad one that caused another receiver to start getting the 771 message. Replaced it and the problem went away. Try swapping them and see if the problem switches tuners.

[jdspencer]

My gut feeling is that the integrated mutliswitch in the LNB assembly is faulty. Try using different cable connection combinations.