[SiriusHardware]

Yes, that's better. The resistance seems OK and shows that there is not a short between the phono socket outer and inner. Even if you were putting more insulation on top before putting the lid on before, the lid would be such a snug fit that the metalwork could easily bite through the insulation. The way you have it now is a lot better.

Edit in light of your own edits and additions: Yes, IN is obviously the correct position for the switch.

It's quite awkward that the remote for your X... TV is not the original one as this is just the sort of function which might not work on a replacement remote.

OK, so try your Daewoo, for which you presumably have the real remote. Plug your SCART adaptor into that, connect the Spectrun composite-out to the yellow input connector on the SCART adaptor with an appropriate lead.

Do you have anything like the following on the Daewoo remote?

'AV'?

or, a symbol of an arrow pointing from the left into a slighly distorted rectangle?