The power supply I received with my ISY944i has failed.  The ISY stopped working and I noticed that the network connectivity failed as well.  LED was dim so I tried a different power supply I had (5v, 1A, appears to be a 3.5mm plug) and it started up instantly.  Fixed.

 

What are the power supply requirements?   Can I use any 5V, 1A, 3.5mm jack power supply?

 

I am also using an Insteon 2413S PowerLinc Modem (PLM).  I saw on the Smarthome site that the PLM can power the ISY.  MY ISY was purchased in 2012, so not sure if this applies to mine.

Edited April 15, 20169 yr by Scott MS

I think I can answer my own question.  You can buy a replacement power supply at universal devices.  I just bought two.

 

https://www.universal-devices.com/sales/

 

 

Also, it appears that if you use the dual-band PLM, like the 2413S I have, you need the external power supply for the ISY.  Please correct me if I am wrong.

Edited April 15, 20169 yr by Scott MS

Nope, you're right -- the 2413S does not supply power (unlike the 2412S, which did).

Just had the same issue w/ my ISY994iZw that was less than 2 months old. I thought my ISY died at first, but since no lights were illuminating I gave a spare power supply a shot and it fired back up. I contacted support and Michel promptly sent a replacement.

You can also use higher voltage power supplies as ling as the polarity is correct. I've been using a 12VDC supply of which I have plenty.

Got the the PLM (2413) and also moved it upstairs. All the writes have now gone through. I will see how it operates now (hopefully better).

 

Thanks for the help everyone!