Testo great instrument, at least for two months
Hi, have to chime in. I have read about the problems with the testo 550. Now I have experienced the problem. Here is the glitch:
The unit is susceptible to static discharge damage. Basically the leads will short something out in the electronics so that it will not show temperatures.
Mine lasted 2 months. The manufacturer is not reengineering the unit, as I have read about this in the past. As of late July 2010, I bought mine.
Everything about the unit looks solid. It just has some defects that make it not work too good unless you wrap it in electonic protective wrap and ground it to the unit you are working on. That's what buying a tool is all about, right? (making things easier??)