1957-58 Zenith Z2230RZ (Ch. 19Z32) 21" B&W tabletop project log - Videokarma.org TV - Video

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1957-58 Zenith Z2230RZ (Ch. 19Z32) 21" B&W tabletop project log

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10-22-2019, 01:36 PM

jr_tech

VideoKarma Member

Join Date: Sep 2009

Posts: 4,573

I suspect that, along with the cooling fins, that it was an attempt to reduce the operating temperature of the power transformer. I bet the original design placed the tube in the corner of the chassis next to the transformer, causing it to run too hot, so the tube got moved.

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