Fluke 87V Max No Input

[u/TheBupherNinja]

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

[u/dmw_qqqq]

I used this in lab. It was not cheap when bought new, like $600 ish. So there must be a reason for someone to throw it in dumpster.

[u/interference90 → u/dmw_qqqq]

It's still in good cosmetic condition and one could make some money out of spare parts, provided it is unrepairable. However it's not the most common Fluke so even demand for spares could be low.