Here's a strange one:

My brand new HD XL works better with a 4-way splitter on the coaxial input than with no splitter in the signal path.

Scenario 1:
Comcast Coax Cable In --> 4-way splitter (radio shack) -->TiVo HD XL --> Sony Bravia HDTV.

With this setup up I get a good clear picture with signal strengths of 60 to 80% (as measured with the built in signal strength meter utility in - settings, channels, signal strength.

I was curious about how much better the signal strength would be if I removed the splitter, so I removed it:

Scenario 2:
Comcast Coax Cable In -->TiVo HD XL --> Sony Bravia HDTV.
With this setup up I get No picture at all. Nada. Signal strength = 0%. Black blank screen.

What the heck is going on. I've tried this with different coax cables over several days. Always the same result. Looking through the forum posts, I did come across a quick reference to "too much signal strength" but this was not explained. Has anyone seen anything like this before?

Thanks,
Larry