Re: [CAD_CAM_EDM_DRO] Blown Gecko 320..Strange noises from control???

Do you have 470 uf low ESR caps installed on terminals 1 and 2 of each
Gecko.?
When you said the cap blew inside the Z axis Gecko and the first Gecko
failed that was a clue. If your leads from the big cap is more than a foot
long the and you don't have a 470 uf cap on the power terminals then the
internal cap gets very hot and will eventually fail. I discovered this by
accident one day while I had a gecko sitting on my bench running a motor. I
had the case off and noticed that there was a odor of something getting hot.
I felt around and found the 100uf cap inside the case was really hot. I
installed a 470 UF LESR cap and it cooled down to ambient temperature. There
is a warning in the Gecko manual about using long power leads from your big
cap.
Dan

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