Problem with 3 Dimmers (5104D750)

Just got home after a few days away and found that some lights were not comming on when pressing the light switch.

I have an upstairs and downstairs cupboard for the CBus dimmers/relays/power supply etc.

The upstairs consists of (2 with in built power supplies)
DIN 8 channel dimmer - 5508D1A
DIN 4 channel dimmer - 5504D2A has inbuilt power supply 5504D2AP
DIN 4 channel relay - 5504RVF has inbuilt power supply

These are all working OK

The downstairs consists of
Power supplies - 2 x XPS51 (5100PS)
Relays - 2 x 5504RDP
Dimmers - 3 x 5104D750
Gateway - 5800WCGA
PACA
CNI

I find it hard to believe that all 3 dimmers (5104D750) failed at the same time so I think it must be something else, possibly network related?

I did manage to scan the network and ALL devices showed up, I could even double click one of the dimmers (5104D750) from the scanned network OK.

But I am having trouble getting Toolkit to open the networks all of the time.
Previously there was not a problem.

I have disconneted the PACA and CNI but that did not make any difference.

I just scanned the network via Toolkit with the following output - see attached

NOTE: All lights/fans etc work except for the ones connected to the 3 dimmers (5104D750)

Any suggestions on what to try and to look for would be appreciated before I call someone out to look at it.
(I live in Essendon, Melbourne, Victoria).

Martin

 

Update

After checking a few things I found

PC lost power and shutdown at approx 22:03 29/12
NESS M1 alarm did not show any power problems
Router/Modem lost connection at 23:35 29/12
Got connection at 00:10 30/12
Microwave lost clock time
Ducted Heater/Aircon lost clock time
Oven was 15 minutes behind in clock time

So, some things seems to indicate a power problem whilst other do not..

No circuit breakers were tripped.

So, I just now reset ALL the Light Circuit breakers (Off then ON) and Main/Light circuit breaker and ALL the lights are now working.

Still confused at what happened but happy that all is now working.