Re: 1971 Philips G6.
The early dual standards had a paxolin focus board which, being beside the line output valves, used to resemble toast after a few years. This was upgraded to a mica 'board' but as John says, this didn't help much. Many sets had a silicon focus rectifier fitted instead of the EY51 as they weren't the most plentiful valve in the Seventies, and all sorts of odd replacement resistors could be found in the focus ladder. That purple choke did give quite a few problems. The pictures on the duals did have the edge on the single standards IMHO, but these could still give much later sets a run for their money, and the picture breathing was, not unexpectedly, far better than on the G8.
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