Steve,
Tacho signal loss, which can't be rectified through a mains reset is usually a component failure on the main board.
Difficult to trace, most people write their 2000's off. It's probably the best part of 15-20 years old.
Sadly the Mistral 2000 wasn't the most reliable of machines, however it's replacement, the MSE Harrier 15/80 is more reliable and you can use the Mistral 2000 rotor/buckets/adapters in it too.
Anthony
Henderson Biomedical Ltd
www.henderson-biomedical.co.uk0208 663 4610
