And it just gets better
The fact that they are still running and get dragged back into service when the new ones fail does seem to suggest that they are reliable. However only to a point. Like today when I'm on the 06:59 and the doors work fine at Ripponlea but refuse to open after that. At each station passengers stand there awaiting the door release that never comes. Eventually they wrestle the doors open, and with the springs on those you have to be pretty fit. Release them and they close with a bang, so don't get caught!
Needless to say that Hitachi was (temporarily?) removed from service after we all fought our way out at Flinders Street.
How long before the old blue ones are resurrected?