The answer to 'how to fix electrical meter' is to first check the circuit breaker or fuse that powers the meter. If the breaker has tripped or the fuse is blown, simply reset the breaker or replace the fuse. If the meter is still not working, it may need to be repaired or replaced by a qualified electrician.
If the meter is not receiving power, check the wiring connections to the meter. Make sure the wires are securely connected and there are no loose or damaged connections. You can also try resetting the meter by turning off the power at the main breaker, waiting a few minutes, then turning the power back on.