Is this a blown Gecko?

Hi,

I got a couple of geckos 320 for my lathe, I connected one of them to X axis
a couple of months ago, it has been working fine (not real work, just some
trials every now and then) until today I was taking some measurements with
my multimeter when I think I accidentally connected the +75VDC to the Arm+
terminal with the multimeter probe, nothing happened just a very small spark
on the probe, no smoke but the gecko would not work and also it heats up
very rapidly.

Is this a blown gecko? can it be fixed?

Please advise.

Mina F.