Originally Posted by in_focus:
“I believe the BRC2000 dual standard colour chassis was the first fully transistorised television set, colour or monochrome. Monochrome sets at the time which were almost solid state still had at least one valve, the EHT rectifier.
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No, valve EHT rectifiers were relatively rare by then, even valve sets were using selenium voltage multipliers for the EHT recification.
The Thorn 1500 was a B&W all transistor single standard set, whereas the previous 1400 was dual-standard and mostly valve, but still didn't use a valve EHT rectifier.
The 1500 was 1969, the 1400 was 1967. In 69 though most other manufacturers (if not all?) B&W sets still used some valves.
The Sony portable which has been mentioned a LOT here was fairly uncommon using a valve EHT rectifier by that later time (1972), and was presumably a 'hold over' from the backward American market.
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And it was British designed.”
Thorn were world leaders in comsumer electronics, they introducing many new features and items.