Just tried the BR103 on the Wurtzburg Nurnberg line, Left Wurtburg ok, set the power down to 0 to reduce speed for lower speed limit, and when I went to power back up nothing happnes. The fans come on as if power is being produced, but the gauge and the train show zero power. Tried resetting main breaker and other things, but the train will not move.
Were you running with the transforme switch in On for a longer time? If so you might have a traction lock because or overheating. Or your e-brake lever is not in drive position.