channels missing

[Notebook64]

some channels missing - switches to the channel - e.g. bbc2hd - just occasional blocks on screen.
done an auto bouquet scan
is there another type to be done?
any help appreciated
4.2.016 Release
Cable
Thanks

[abu baniaz]

it is more than likely a signal issue.

[Notebook64]

How can I check it?


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[abu baniaz]

press OK twice, what are the SNR and AGC levels

[Notebook64]

sir 22
acc 89