This 54VDC may be a better choice. It's hard to tell what the original PSU voltage is; mine has no markings of any kind, and -- being dead -- I can't just meter it. I did see a post on the Reddit thread stating that the OEM PSU on these units is 54VDC.I had the same experience this morning! Bought an ICX7150-C12P 32 days ago on eBay... this morning it suddenly died. When I tested it I found that the front panel LED's briefly flash when it's plugged in, same as you. So now I'm off to find a new power supply. Thanks for the link.
GTM91110P24054FSIM(R GlobTek, Inc. | Power Supplies - External/Internal (Off-Board) | DigiKey
Order today, ships today. GTM91110P24054FSIM(R – Open Frame AC DC Converters 1 Output 54V 90 ~ 264 VAC Input from GlobTek, Inc.. Pricing and Availability on millions of electronic components from Digi-Key Electronics.