1949 Zenith Porthole Restoration - Videokarma.org TV - Video

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1949 Zenith Porthole Restoration

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#10

06-30-2015, 02:12 PM

bandersen

RCA 741PCS

Join Date: Mar 2009

Location: Chicago, IL

Posts: 8,815

Could be insufficient drive signal to the horizontal output tube. Do you have a scope ? Also I believe there is a 470K resistor on the second anode that may have gone way up in value. Could also be as simple as a weak 1B3 rectifier tube.

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