Electronics > Repair

Fluke 79 III -OL- in vdc,mvdc and won't measure resistance



A fluke 79 III that show -OL- on Vdc and mVdc and won't measure resistance all without probes using a new battery

Vac show (0.00) normal and Buzzer , Diode mode works

Attached photos for the DMM

I dont know to what to check next

Any suggestions?

m k:
One possibility is that ohms voltage source is on all the time.
You should be able to check that.


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