Fluke 87 multimeter reads/blinks "lead" - Fluke 87V True RMS Multimeter

If your Fluke 21 III multimeter is not reading AC or DC voltage properly and the ohms sign comes on in voltage mode, it may indicate a problem with the internal circuits of the multimeter or the leads. Here are some steps you can take to troubleshoot the issue:

1. Check the leads: Ensure that the leads are properly connected to the multimeter and the test points. Make sure there are no breaks or cuts in the leads. Try using a different set of leads to see if the issue persists.
2. Check the batteries: A weak or dead battery can affect the accuracy of your multimeter readings. Check the batteries to ensure they are properly installed and have sufficient charge.
3. Check the settings: Make sure that you have selected the appropriate range and function on the multimeter for the measurement you are trying to take.
4. Reset the multimeter: Reset the multimeter to its default settings to see if this resolves the issue.

If none of the above steps resolve the issue, it may indicate a problem with the internal circuits of the multimeter, and it may need to be repaired or replaced.

try new test leads first. even if the unit is miscalibrated, you should get the same measurements from the same components/circuits. you'll need to send the unit to a calibration center, or the manufacturer, to get it zeroed out, if you still need to afrer getting new test leads

If you select current measuring (A or mA) and have the test lead connected to V then you get this alarm. Same thing if you select Voltage measuring and the lead is connected to a current terminal.
Check the connections and the selector setting.

clean amp terminals with compressed air and iso dipped cotton swab (dirt inside terminals can cause "leads" error to come on

F8 Error - invalid model -you will have to return to Fluke for service

F8 Error - invalid model -you will have to return to Fluke for service

cannot find service manual but here is schematic

http://www.schematicsunlimited.com/f/fluke/fluke-17b-multimeter-schematics

try cleaning terminals. are measurements OK?

http://www.fluke.com/fluke/inen/Digital-Multimeters/Fluke-15B.htm?PID=56017

same thing

This meter has been recalled due to a circuitboard problem which may lead to severe shock. Please go to flukes website at www.fluke.com/33xrecall to download the forms and get information to see if yours is one involved in the recall.