How to identify a burnt port on a Dlink DGS L2 switch?

Question

System administration

The "copper" port does not work on the DGS-3120 switch, although the light flashes green + orange when it is turned on (booted), as it should. But when inserting a patch cord, it does not light up
. Is it possible to somehow check the port for "professional suitability"?
Neighbor ports work as they should.
The settings have been reset.
Now an option has come to mind, insert a crimped jack, and ring the contacts with the case, for example, or among themselves.
What do you think? How else?

Answer 1

ring the transformer harness at the port. when it burns it rings almost at full speed

Answer 2

If you took another gigabit patchcord and the link does not rise either, then forget about this port.
Or take it to a service.
Definitely burned out, it makes no sense to call something.