Just a little side note, vic. As of the very next day (21st) we can no longer make this claim:
vic7767 wrote:Although no-one has actually experienced a true hardware failure of the H-Bridge NPN/PNP bi-polar transistors used for the drive wheels on the 500, 600, and 700 Roombas, ...
Member matofill reported in this post
replacing two power xstrs in his R3-Roomba that effected operational repair. Communication with matofill brought forth data that strongly suggests his transistors failed due to some cause other than over-heating.