external power jack/ Vin maximum current

[dasaki]

Hi!

I'm working in a project with five dynamixel AX-12 (about 4.5a max) connected to an Olimexin 32u4 via an 72ls241. The board is powered from mains with a 10v 5a power adapter.

Two boards stopped working after a while. They don't work anymore with the power jack, but they powered via USB.

What is wrong?

[dasaki]

I've used an original Arduino Leonardo board with exactly the same setup and it has been working flawlessly.

Can anyone tell me the maximum current through the Vin line /pin I've looked in the manual but there is no info about that.

Also, any clue in what is broken in my Olimex boards?

I'm thinking filling a RMA... 

This is my setup:

[olimex]

Vin as the name says should be used as Input to power the board, not as OUTPUT to supply 4 motors!