I have looked at some past threads, but they did not appear to have a solution. I am sorry if I am asking an old question.

I have a DirecTV TIVO unit. The manual says that the TIVO outputs "AC-3." My Outlaw 950 keeps losing the digital signal from the TIVO. I was thinking that locking the format on that input would be the solution, but it has not been.

First, which of the formats should I be locking on? DD or PCM (first or third options -- DTS appears to be the only clearly wrong choice)?

Second, how can I tell if the problem is a drop by the TIVO, or an unlock by the receiver?

This is very annoying, and I am thinking that I will just have to using the RCA connectors, which if inferior, should not lose lock.

Any and all suggestions and/or solutions welcome. Thanks in advance.