axis overcurrent

[lovell110]

I searched this forum for some info but I did not find anything useful. So I apologize if this question is redundant.
I have a VF2 that gave me a Z axis overcurrent alarm. I shut down and cleaned out the brushes and tried again. Same thing! I swapped the Y axis and the Z axis boards and the problem moved to the Y axis. Now my question is before I go and call HFO for a replacement board has anyone gone any deeper in finding the problem on the board? I already checked the fuses on the board and now I am moving to the resistors. Any guidence would be appreciated.

John

[serviceman]

you can replace the fets which are usually blown relatively cheap you can ohm them out and see the blown ones they are the 4 discs on the rear part of the board on the heat sink.