@Vincent-TP Hello Vincent, I have already been through any troubleshooting. Frankly there's not much to do other than verify the 24v PoE adapter is working, which it is.
As the device is out of warranty my only recourse is to repair or purchase another device. I have the ability to repair this device so I require the appropriate circuit diagram or at the very least the identification of the component at position T9. We have Right to Repair regulations here in the UK so you can't simply say "it's confidential" and be happy with that response. I am not.
So, either you supply the circuit diagram as requested or tell me the specification/make/model of T9 so I can source one.

Thank you

Vincent-TP wrote

  @Stoneditch 

 

Thanks for posting here.

Is this issue occurring during regular use? If so, we recommend contacting local support immediately for troubleshooting and to verify warranty eligibility.

If the product meets warranty conditions, a replacement may be provided.

Additionally, we strongly advise against customer self-disassembly, as such personal actions would void the warranty policy.

Lastly, the info is confidential. Thanks for your understanding.