Top critical review
3 people found this helpful
You can’t do without one
on 27 February 2014
Absolutely no reason to doubt that this is an excellent piece of equipment and worth every penny.
However, a cautionary tale. My original unit developed a problem after several years, whereby several (but not all) of the buttons became increasingly disinclined to work properly. At first, I assumed the unit was sealed and would have to be replaced. I then found - starting at the bottom end with a screwdriver blade - that the two halves could be gently prised apart, and that part of the circuit board and the back of the rubber sheet were contaminated by a mysterious oily substance. I wiped this away with a paper towel and a cotton bud, snapped the two halves back together, and the unit now works like new again. Took about five minutes.