Electronics > Repair

Please help, FLUKE 8920A Multimeter Repair

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daisizhou:
OK. this is a test video,The TP3 waveform looks a little different than before.
Looking forward to your analysis or further testing.



Harry_22:
Perfect! I this video you catches 700V overload.
I need some time to analyze the data.

daisizhou:
Ok thanks, I will wait for your results :-+

please allow me to say one more thing,The video below may have clues."LO RANGE ENABLE" button.
https://www.eevblog.com/forum/repair/fluke-8920a-multimeter-repair-needs-some-help/

Harry_22:
Yes your new video eplains my suggestion somewhat.
Now please measure voltage at two points:

daisizhou:
I measured the voltage between GND-R1 and GND-VR1,If you mean the voltage between R1-VR1 please tell me and I will re-measure.
thanks

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