Fluke 8300A Multimeter.
Problem: common displaying of "6" and "7" (all Nixies)
The Instrument is a multiplexer, so it use only one 7441.
1.) I buyed a 7141 and replaced the 7441.
result: no change.
2.) removed 7441, empty socket, Testing OHM between pin 9+10 (outputs "6" + "7".
result: 10,04 Ohms , this sucks
3.) please do not copy this action, it is no engineering! I will connect the socket pins 9+10 to a programmable power supply and insert there 12V maxcurrent of 1A