[mythtvnz] Unable to receive TV3 (and other channels on this multiplex)

[Mark van Dijk]

Bit of an odd one.  I've been running mythtv since 2012.  Currently on
Ubuntu 20.04 + mythtv v31.

Couple of weeks ago, TV3 (and other channels on this multiplex) stopped
working.  Rescanning my Hauppague HVR-2210 did not fix.  When scanning, it
does pause for a long time on UHF channel 33 - before saying found 6
'possible' channels.  I cannot see these channels in the channel editor.

I've deleted/reinstalled the capture cards / video-source / connections /
channels.  Nothing.  All other channels working perfectly - just not TV3.

I then tried an HDHomeRun.  Exactly the same issue when using this via
MythTV.  All channels working fine except TV3 & Co.

Finally, i used the HDHomeRun_config_gui on the exact same ubuntu machine
(i.e. just not using MythTV) - and i can scan/view TV3 perfectly!?  Signal
strength/quality/etc are perfect 100% in the HDHomeRun app.

So - aerial/capture device/signal/cables are all fine i think.  Issue must
be inside MythTV itself.  I don't see anything interesting in backend logs.

I'm planning to wipe the machine and reinstall from scratch, but thought i
would ask here first in case anyone has any bright ideas...

Cheers
Mark
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