General > General Technical Chat
Fluke 87V displaying "Lead" and sounding beeper when nothing is plugged in
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king.oslo:
Hello there,

I've got a Fluke 87V.

Today, when I came to switch it on, it began sounding an alarm and display "lead" when I switched it on, despite nothing being plugged into the jacks.

When it turn it to mA or uA, it shuts up.

Is this a common problem? What should I check?

Thank you for your time.

Kind regards,
Marius
NiHaoMike:
Use compressed air to blow out any dust.
king.oslo:
That worked.

Is there optical sensing of the input jack?

Kind regards,
Marius
NiHaoMike:
If you take a look at the teardown of the 28 II, yes, it's optical.
king.oslo:
Thanks!

Kind regards,
Marius
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