This is good advice. The worst failure mode in one of these receivers is repairing or replacing the transformers. Tubes are easy, if sometimes expensive. But

This is good advice. The worst failure mode in one of these receivers is repairing or replacing the transformers. Tubes are easy, if sometimes expensive. But the transformers are frequently specific to a manufacturer or model. The main way transformers are ruined is bad caps. Otherwise they'll last forever. Wax capacitors from back in the day are hot garbage. Also, these things can and should be updated to correctly ground the chassis, add fuse(s) and have a polarized power cord with sane insulation, as opposed to cloth.