To Malte and Johannes, thanks.
About potential damage to internal components because of long term excessive voltage: Anything I should check/inspect closer, relating to this? Any signs I should look/listen for?
I got this Polysix about a week ago, and have not used it that much (luckily). The previous owner/seller lives in the same country as me, and told me he had used the Polysix "alot". I have no idea of the voltage of his step down converter. (Just hope it wasn't as high as mine.) To me everything seems fine, (except from the grounding noise in the main output described in another post), but maybe there's something I should inspect closer?
Anyway, the plan is to asap install a new transformer into the Polysix, plus a 3 prong wire. This will allow the Polysix to be plugged directly into the wall, and also earth/ground the Polysix. Using a step down converter is not a long term option.
I know that swapping the locations of the brown and the orange wire will rate the Polysix for 120V, but these wires are soldered onto the KLM 372A (this is the old/first version of Polysix). And my soldering skills are really not up to this task.
So I'll just wait for the new transformer, contact the best tech in town and ask the tech to swap transformers and install the 3 prong wire and run a grounding wire to the chassis/casing.
About the transformer: Is it not important that the transformer is rated for receiving 240V? And will a 35VA or a 40VA transformer be able to work with 240V?
I know very little about this, especially about transformers, (but I am reading about them now and learning). The one I linked to in the first post is the one Kiwisix suggests for the Polysix.
I sent a question to the local transformers-dealer, asking if they had something similar to the one Kiwisix suggests. The dealer says that this transformer will do the job:
https://www1.elfa.se/data1/wwwroot/assets/datasheets/05612361.pdf (link to spec-sheet in English)
Can anyone tell me if that transformer is good for use with the Polysix? Or what other specs I might be looking for? Don't want to buy anything overkill, but I'd like good margins so things don't get heated and stuff like that.