What model of AP please (has a "uid dir that does not blink")?
Are you using a power supply, power injector, or a PoE switch?
Does changing the cable to the AP help? Does changing the port
on the PoE switch help?
If you pre-configure your PC/laptop with a 192.168.0.10 IP address,
and directly connect to the AP with Ethernet, after holding down the
indented Hard Reset button on the AP, does it answer a ping to 192.168.0.1
If so, try SSH and see if you can login with 'super' and 'sp-admin' uid/pw.
If you login successfully, you can "prime" your AP with ZD info and then
reconnect it to your network:
set director ip a.b.c.d
And put it back on your network that can talk to the ZD at this point.
Does that help?