I have had my 5000 for quite a while, 6 yrs or more.
I have changed monitoring situations and added another mtu set.
Was monitoring 2 solar production systems, 1 net, 1 microfit. No issues until suddenly started giving obviously false data, then none.
Gateway at house panel and cat5 from there to router.
4/0 alum service wire about 150ft. to central meter transformer.
90 ft 1/0 alum from transformer to microfit meter, where 1 mtu is located.
80 ft 2/0 alum from transformer to shop panel, where net system ties in and second mtu located.
Took gateway to shop, where it flashed on side as it should, and recorded data.
Tried hooking up gateway directly to either main lug at house breaker. Still no go.
No other new equipment installed.
Could it be resistance at the connection of all these big cables together at the transformer?