Troubleshooting Balboa Spa LED Light Controller

My dear wife bought a Passion Swim Spa with a Balboa spa pack. The LED lights worked for about two years and then when you pushed the button to turn them on they would light to full brightness and immediately fade to dark. Now nothing happens at all.

I called the vendor for the spa and asked. "Oh yes, it's the LED controller box. We have them for $55 each."

OK, so I pulled the plug for the LED controller on the spa pack main board. It's supposed to supply 10 VAC. I'm seeing about 0.6 VAC.