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I would consider one of those as extremely worth restoring.
Look at the VP-155 schematic at the ETF: there is NO RF/IF gain control at all
that I see! The VP100 and VP101 have AGC on the convertor tube only.
Of course, there is the chance that the power transformer is kaput. Perhaps
do what the Brits do with their wet climate: heat the transformer to about say 100 or 105F for a week with DC to the primary to be sure its dry
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