Re: [CAD_CAM_EDM_DRO] G201 death/repair/questions/problems (long post)

I thought someone told me that the Geckos that were sold without lids
initially had the heat sink/base plate 'soft' anodized, not 'hard'
anodized. Small scratches in the heat sink/base plate would cause the case
of the FETS to conduct/short out to the base plate. This is a bad thing.
If it were me, I'd scratch off some of the black coating on the sides, make
sure I'm getting good contact to the aluminum with my multi meter, and then
check for a short between the case and each of the 8 FETS. Actually, it
were me, I'd put some mica insulation between each fet and the case, so I
know that they are not shorting to the case.

Please let us know how it goes, and what is wrong/isn't wrong with your
geckos. I love a good mistry.

- Steven Ciciora

At 11:53 AM 4/1/03 -0800, you wrote:

>Hi folks,
>
>Chris Brick here (aka resosys).
>
>I've got to be doing something wrong. Really wrong. I'm hoping someone
>here can help out as I've exhausted my knowledge of these systems and
>I'm still having major issues. This is probably going to get pretty
>long so I'll apologize now.
>

<snip>