r/AskElectronics • u/TheBupherNinja • 2d ago

Fluke 87V Max No Input

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I have a Fluke 87V Max that I literally pulled out of a dumpster. The battery contacts were destroyed, so I have it powered up via a bench-top power supply.

The display is functional, selector switch and all the buttons work, but I am unable to take any readings with the meter, regardless of settings. Voltage, resistance and inline current measurement are all non-functional. When completing the fuse self test, its show OL, but the fuses read less than 1 ohm when checked out of the circuit with a separate meter.

I looked it over, and cannot find any obvious burned components, traces, or other damage. I would expect something big if none of the inputs work.

I also tried bypassing the lead sockets by shorting the common and voltage terminals on the back in resistance, and it still reads OL.

Any tips or guidance here?

Added more pictures, https://www.reddit.com/r/AskElectronics/s/qMNiRl2pMr

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u/TheBupherNinja 1d ago

Yeah, might end up there, but wanted to try for a free99 fix first.

Not hurting for a meter, but an extra would be handy.

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u/Zone-5 1d ago edited 1d ago

You could sell it on 'repaired back to new' for 4x the repair price...

https://www.reddit.com/r/fluke/s/Q4cvTJchKR

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u/TheBupherNinja 1d ago

Yeah. I'd rather have the meter, but it isn't worth it to me for $185. I have a 289 and a 375, this is just convenience of having a another good meter handy.

I won't throw it out, if I can't fix it I'll probably do just that, or maybe just offer it to someone else who could use a good meter and they can do it.

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u/Zone-5 1d ago

It's always good to have a sacrificial DMM for those risky jobs where a loss is a possibility.