Just a quick update to conclude this problem...
On Friday I swapped my Panasonic DSB31 for a Panasonic DSB40 that I borrowed from someone. Initially Channel 4 wouldn't work with my viewing card inserted into the DSB40 (I just got a blank blue screen) but an update to the receiver software resolved that problem. The result was that with the DSB40 there was no longer any breakup on Channel 4. I plugged my DSB31 back in and although there was still some breakup on Channel 4 it wasn't as bad as before. So it seemed that I had a dodgy digibox
Anyway, I bit the bullet and decided to get a new box to replace my apparently faulty one and also upgrade to
Sky+ in the process so I ordered a Pace TDS470N box.
During the weekend I did put some new cables to my dish for the other LNBs and also decided to replace original cable to my
Sky box (plus a second feed in preparation for the
Sky+ box). After renewing my cables and plugging my original DSB31 back in I no longer seem to get any breakup at all on Channel 4
I can therefore only guess that the problem was actually an issue with my DSB31 not liking the original cable (about 6 years old) in conjunction with the different LNB/dish that I fitted last weekend. Prior to that on the old
Sky minidish with the original cable and DSB31 everything was fine.
Anyway, looks like I'm getting a new box now whether I need it or not
At least I will now have
Sky+ features though so it wasn't all in vain
