My R2 power supply died and the fix is fairly inexpensive. take the four screws out of the bottom of the power supply and disassemble it. The goal is to remove the low voltage cable that plugs into the R2. Now cut the end off the power cord that plugged into the power supply. Purchase a 24v 15a power supply. https://www.amazon.com/gp/product/B07CPTHG7N/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 I paid about $20. Wire up the supply as per the picture. Adjust the tiny pot next to the green led to set the supply to 24v +/- 2%. Plug it into the R2.