RB493ah/433ah rebooting continuosly

Hi

Hope someone can help, am going out of my mind.

I have a 433ah and a 493ah using either 2 x R52hn cards or 1 x R52hn and 1 x R52n and as soon as their is activity on the cards the rb reboots.

I have tried using the 24v 1.6a poe but still have the same problem!

biggest issue is that i need to put another card in to use all 3!

does anyone know of a solution?

Thanks

Does it boot if you remove all the radios?
What type poe injector are you using? A 24v unregulated power supply can produce voltages in excess of 28v if the current draw is insufficient.
How long is the cable providing the poe to the router?