Just posting a quick update on the status of Rich from New Zealand’s Zenith Porthole restoration.
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Power supply block has been cleaned up and rebuilt. All capacitors replaced, both of the corroded high wattage sand covered resistors in the audio section and one small charred 1/2 watt resistor.

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The main chassis is undergoing complete rebuild. Everything is going well except for a bad volume control/power switch assembly. No direct replacements are available at this time so we might have to improvise this a tad!