My FLUKE 8920a encountered a strange failure, please watch the video---
This is what I posted a few days ago, but no one can help me
--https://www.eevblog.com/forum/repair/fluke-8920a-multimeter-repair-needs-some-help/
If 8920a is not powered on for a long time (power on),The first time you turn it on, it will definitely have the above fault.
If it is normal, turn on the 8920a every day and it will return to normal.So I spent a lot of time testing it,I've never been able to pinpoint the fault point
The fault phenomenon is that when you turn on the computer, you will see "700" flashing all the time.
Sometimes the "mv" gear and "V" gear keep jumping automatically, just like what was captured in the video
I don't know how to find the fault point correctly