[mythtv-users] Any way to tell which tuner card might be bad?

[Graham wood]

Have you tried running one tuner for a while. to see if it is the one
you would suspect.

I've found in my system that the tuner more exposed to the CPU was the
failing point as I swapped my tuners and had the problem occur in the
other tuner. Unlike your issue mine was much more obvius with squeeks
and pops so i could unplug the antenna cables to test.....