YES WER'E HAVING TO DO THAT CONSTANTLY.
As per my previous answer, we use the digital setup to retune the TV regularly when the picture is lost.
Does the ariel connection need to be screwed in very tightly ?
No, Ariel pin simply goes in antenna jack on TV, can you please check Ariel pin both wires are not touching / shorted each other and is it coax wire coming from air antenna or its indoor Ariel?
We have now checked, both wires in ariel pin are not touching.
Ariel is mounted externally on roof.
Thanks for the info.
Dear Shahid, we have just done as you have explained, picture looks better now, but time will tell,
Excellent Dave, I hope TV will keep showing normal picture after resetting and updating channels.