Hello together, I’m new, read a lot with and since some experts here the Beissbarth force machines seem to know well I ask for help and tips. We have a problem here with a Beissbarth force machine MT510, which behaves ‘normal’ after switching on: – self test, displays, acoustic signals. Wheels with ALU rims should be balanced, the key (4), choice of the compensation method, is pressed twice (see pictures). After starting the measurement process the wheel runs some Seconds with the display “- – -” and then after a short time 0 (NULL) is always displayed, and this is on both levels. Also with other wheels is here the Ergenis always 0 !. If with the key (4) a different program is selected, one gets after the measurement a weight indication in the display and the red direction arrows and then the green LEDs indicate the turning of the wheel on the balance point. A weight indication takes place with all other programs. required computer program always displays as a result 0 grams.? What do we do wrong.? Best regards Albert