I can confirm this works for the Cinema 600. I used this power supply from Amazon. Some notes:
The hex screws on the back are standard sized. I ended up having to use hex keys, which really sucked because the number of screws, but everything I have is metric, so, that sucked.
One the 110V side I stripped back the insulation and you pull down on the levers, then insert the wire. The spring holds the wires in place.
On the low voltage side, as you're looking at it on the edge, the 24V is on the left and 5V is on the right. I confirmed this with a multimeter and urge anyone doing this repair to confirm this.
In the 5V side, the red and white wires go together into the positive side. Black goes to ground.
I did drill an extra hole and used the standoffs on the original board to secure the new power supply to the back panel. The hex size on these is smaller than the hex screws that secure the back panel to the case.
Thank you so very much for coming up with this! Thanks to you good folks, I fixed my out-of-warranty sound bar for just $13!
