I will try that, but testing the other tips first
Putty init 4
Ftp to etc/enigma2/settings and delete the lines with nims in it.
Putty init 3
Correct the settings in tuner menu.
Update the box.
Don't know if it will work with your box.
I try it, but did not work for me.
I think that this empty slot there, this thing confusing. Perhaps in the software is not included with this capability (empty slot(s)).
Philips TU-1216 is a dedicated DVB-T tuner!!! It cannot handle DVB-C at all! For DVB-C I am using the Philips CTU-1216 Mk III which in my case is used for Ziggo Cable in the Netherlands. IMHO all DVB-T antennas are active because of the short aerial.. So activating +5v is mandatory...
If you own/operate a DVB-T compatible TV the +5v power-insertion is probably done automatically... Does your DVB-T antenna have a LED to show it's status??? In the Netherlands they all have......
One thing springs to mind.... Did you upgrade your OpenPli 4.0 or did you perform a clean full flash of the box? In the latter case the cables.xml is not directly suited for DVB-T... You may need to edit cables.xml to incorporate at least 1 DVB-T valid for your area.