The screen was completely dead. It showed no signs of life what-so-ever, not even a squeal.
Electrolytic capacitor C204 (1000 µF/16 V) had failed with a bulging top and bottom. Capacitors C202 and C205 (both 1000µF/25 V) measured within capacitance spec, but both were well under 900 µF. The rest of the electrolytic capacitors on the board measured within spec and were not replaced.