5-pin power supply for ETC Express 24/48

We have an old ETC Express 24/48 lighting console at our main library branch in OKC. The power supply recently failed on it and we found a few vendors that was selling the ETC ps320 supply on their site. Each time we tried to order, they would get canceled because they all said that the manufacturer no longer has any to supply them.

We made the mistake of letting our local vendor take the power supply with them because they have apparently lost it, making it nearly impossible for us to build a new power supply because the 5-pin connector seems to be proprietary. 

Does anyone know where a power supply can be sourced at all?

I really don't care if it works, I just need the 5-pin connector. I have a Mean Well power supply that will be here tomorrow that I'm going to use for the 5v and 12v pins. I found the pinout for the power supplies here, so that part is not an issue:


I originally thought it was a 5-pin DIN connector, but after getting a connector in today to fashion my own power supply, I discovered it's not the same and it won't fit.

Ideally, we would have liked to have known about the problem sooner. But it was just recently brought to our attention, so it's too late to replace the entire system with a new, modern lighting console. Our new fiscal year starts on July 1 and our budget has already been approved and we aren't able to add updating a new lighting system this late in the current fiscal year.