Pete_uk
Established Member
That godawful electrical buzz at one end of the motor carriages is a known problem with the entire fleet of AT300s. Its apparently some sort of field isolator that prevents signalling equipment interference. Fortunately my poor ears dont have to endure the punishment when running on diesel.
I have read a note somewhere (cant remember where -probably internal) stating a new design was being tested that didnt make anywhere near as much noise
Is that the highish pitch noise that suddenly turns on at around 50mph?
I've only ever traveled on diesel mode so don't know about running under the 'juice'