We can compare AAAC‘s time compared to last months attempt.
Andy.
I took off my turbo covers and started a session then pulled the plug on the stepper motor mid session.
The session continued and my watts and speed flat lined however when I plugged it back in it didn't respond again until I quit the session and started again.
I was thinking that your stepper motor may have simply come unplugged.
Do you still get the green power LED on the back of the trainer when your power is on, and is it constant?
If so it may be that the stepper motor has just become unplugged, it is unlikely though as they are quite a tight fit.
I wouldn't harm to have a look and I don't think there are any warranty seals on the casing.
If you turn the turbo upside down you will see six screws recessed in the bottom.
Undo all these and the top casing comes off and then there are a couple more at the front that hold the bottom casing on.
By the time you have the top one off you may be able to see any problems straight away.