CMM4 power and resitor problem

We cannot get rid of power source problems. This has happened to us on 2 different places:

We have:
- CMM4
- 56V Power source
- 29V Power source (ACPS112WA), with 1k5w resistor installed.
- One AP430
- One AP (fsk)

When we power everything off and on it usually works.
But when we do click on “Reboot” on the CMM web management we get problem:
The red LED starts flashing and we get “power fault” error on the 29V port.

The only solution seems to be using a ACPS120WA power source instead of the ACPS112WA.