Fieldpiece SC 76 Multimeter

Fieldpiece SC 76 Multimeter
Does anyone know why a Fieldpiece SC76 multimeter would just stop working? The Non Contact Voltage (NCV) button and alert works. which tells me that possibly the circuit board is still good. I checked the fuse and the battery, all good. I know it’s an older multimeter, but I’m not ready to give up on it, especially when it just died out of blue. Thanks

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