La Crosse Technology Measuring Tools & Sensors - Page 2 - Recent Questions, Troubleshooting & Support

Double check that the cell is in the proper way. Sometimes it is put in upside down. (we've all done this). Secondly there may be a + mark next to a contact, on some models it is necessary to short out the mechanism to the cell to activate the watch. You can use a couple of straight pins, place one on the + contact on the movement and the other to the top of the battery that is facing up and touch the 2 needles together. Like I said on some models that is done to start the watch. It may even instruct you to do so on the back cover. good luck hope this helps. gabe.

Go into the menu on the main unit, and you will find a reset all rain levels setting.

Here is the manual for your product - battery information is in there http://www.lacrossetechnology.com/tx61/manual.pdf

Replace the glass reed switch on the circuit board as it is bad. You must be very careful to orient the replacement switch so that it closes only when the rocker arm is at the vertical position. This will take some work to get right. Use a volt ohm meter and set the Plus lead at the reed switch lead at the top of the board. The meter should show a closed circuit only when the rocker is at the top. Good luck.