Philco 15M91 is alive

[Mal Fuller]

Focus the contact spray on the switches at the tuner's shaft end. Getting things too wet in the rear (r.f. section) can cause an alignment drift you may regret (especially tuners with a nu-vista r.f. amp).
Believe it or not, you can do a great job of cleaning a switch type (non-turret) type tuners by chucking an electric drill to the shaft and letting 'er rip after spraying.