[Electronic M]

A schematic will help in parts identification. You need a model number to find the schematic, and schematics can be hard to get for euro imports like your set.

One test you can do is with the set on try wiggling or removing the audio output tube. If you hear pops/crackling from the speaker then B+ voltage is present at least at the output tubes.

Some euro sets are not worth restoring. They used lousy band switches that would break easily, and some would dissolve if the wrong type of control cleaner was used on them. If the band switch wafers are broken then it is limited to parts set or display piece status since the only source of those switches is another set with the same chassis.