During the FCC color hearings in Washington (1949-53) DuMont demonstrated one of their standard 21" console b&w sets, equipped with a custom built color wheel and adapter. The color wheel was six feet in diameter, and was driven by a 5 HP motor.

When the set was turned on, the current draw from the motor blew a fuse and the meeting room was plunged into darkness. The FCC commissioners were furious at what they considered to be an attempt to ridicule and embarrass CBS, but the point had been made (DuMont should have used a Royal Sovereign for this demo)!

At another hearing, someone accidentally jarred a CBS color set that was operating, and the color wheel came loose and exited through the top of the cabinet!