Just got a Topfield TF4000T set top box recently.

Just a few problems I hope somone can answer.

When using digital out on some stations, haven't watched many stations but mainly 10 and 2 every so often Audio drops out for 2 - 3 seconds, when using dolby digital audio track selected and optical out.

Using digital optical audio out on the STB. When switching channels sometimes no audio is heard if the program is not broadcasting in Dolby
I have to switch between digital and analogue and back to digital to audio out/heard on my Hifi system.
Seems like my HIFI (marantz SR5200) is not picking up change of audio or STB not changing audio tracks even though it defaults to AUTO as the chosen audio track f no dolby sound track is present.

Why do some widescreen programms always have the white dashed line at the bottom or top of the picture/screen. Always seems to appear on channel 10 broadcasts and occasionly on other channelsas well.