. . . But without line: lcd.begin(16,2);
It will show on the serial window with the actually temperature ,but I2c board doesn't show anything. . . .
Wouldn't this indicate an I2C problem as opposed to a sensor problem?
There have only been a few dozen of these I2C problems reported recently (possibly in the last few hours) so he can probably find a solution by looking through the recent forum posts in the Displays section.
Don