The only place I know of that makes a custom PSU for the Turbo CD, is Retro Game Cave.
http://retrogamecave.com/#/shop/4577155957/all-nec-power-supplies/5885729To see a pic of it, you can click the Photo of the Duo system, and then mouse over the bigger pic, then click the right (>) or left (<) that appears in the middle of the image, along the side.
They're currently sold out, though.
If you follow them on Facebook, you'll be notified when they are gonna be back in stock.
https://www.facebook.com/retrogamecaveAlso have their M1 and M2 Sega Trio PSUs. Bought em a year or so ago.
They are still working pretty good.
Anyone else have any experience with Retro Game Cave's PSus?