Re: From SECAM to PAL
Unitra might be the exception to the rule in that case, but a set turning up in the early 1990's could still have been some kind of overstock that was liberated leading up to or shortly after the fall of the iron curtain. I'll concentrate on looking for Unitra models/schematics then.
Tesla and certainly RFT certainly switched to all transistor technology some time during the 1970's or early 1980's possibly in case of Tesla (would have to dig into schematics). I own a late 1980's RFT B/W set with no valves to be found.
Then there's Russian, Yugoslav and Romanian sets. Will have to do some research there too, but Romania did already have joint ventures or licenses in the early 1990's to manufacture relatively modern colour sets and Ei tended to license the previous design of Western manufacturers. Gorenje wasn't too outdated either.
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