Dropout of wired device during the day

[Mal-110]

Hi,

We have full fibre to the house with wired devices and wireless. Our main computer is an I Mac and is wired. We have several iPads a Mac mini and other devices including a solar panel inverter. All work until around 10.30 am when the wired iMac stops being connected. Network shows it as unplugged. All other wired and wireless devices work. iMac will work wirelessly. Checked cable between router and iMac and it’s good. The following morning the iMac is back working without being touched.  One reason we upgraded to the full fibre was to alleviate similar short time dropouts but it seems we have no service during the day. 
any thoughts welcome

Malcolm

[Mal-110]

Thank You all,

I my original post I said that all other wired devices work when the IMac Drops out. I Carried out the tests sequentially. I will reset the modem shortly. I used a laptop and connected the ethernet cable from the iMac to the Laptop and it would not connect. It does however work when the Mac does (up to around 10.30am). 

Whilst most of the evidence suggests the Mac at fault, I cannot reconcile why the timing of the dropouts is so specific and consistent.

regards

Malcolm

PS I write this using the Mac as its only 8.52

[JimM11]

@Mal-110 That is why you where asked to swap the Ethernet port on the router that your iMac was plugged into with another to eliminate a port fault or whether the Parental controls on the Router FW are all messed up, and if it is a Parental issue then the iMac will still get blocked and the new port will follow suit, If it is a Parental and port issue, then the port will get shut down and whatever is on the specific port will get blocked.

Do you see where the guidance was trying to logically point!

It also cannot as yet be ruled out that it is a specific iMac issue that is because you stated that the iMac Wireless connection functions although the Ethernet port has gone. It's a step fault finding process.

[JimM11]

@Mal-110 You need to be precise, is it that you have an iMac desktop on a port, and then you do a mac, by that do you mean a Mac book pro!