Micromill 2000 servo controler is dead

photonix · Post by **photonix** » Wed 20 Feb , 2008 23:04 pm

I'm looking for some help making repairs to our Micromill 2000 servo controller. It looks like it was left on all night and maybe the fan died... we are not entirely sure. We came in the next day and the fuse was blown and the Triad VPS-5000 transformer was hot enough to burn at the touch. We replaced the fuse and it vaporized it the moment we flipped the switch. No surprise there. So we replaced the transformer, and again, the fuse was gone the moment the switch was flipped. There are no obvious shorts, fan doesn't turn on, light doesn't turn on. Its as if there is no power at all except the fuse vaporizes. So now we are at a loss. If you have any ideas on where to go from here it would be greatly appreciated.

bradders · Post by **bradders** » Thu 21 Feb , 2008 13:21 pm

Jeremy,

Which fuse is it that blows ? is it the one to the fan and the transformer ? or is it the one on the control board with the 7 segment display ? By the way what colour is the 7 segment display ?

boots · Post by **boots** » Thu 21 Feb , 2008 15:50 pm

Could you post some photos of the control card and wiring in the back of the machine?

bradders · Post by **bradders** » Thu 21 Feb , 2008 16:19 pm

I hope these are the correct drawings (110v)

photonix · Post by **photonix** » Thu 21 Feb , 2008 18:53 pm

I will try to get some photos today or tomorrow. Thank you for the schematics btw.... although, from looking at them I'm not sure if we are talking about the same machine. There is only Blue, Black, and Red wiring in our box, and the fuse from the mains is 2A, not 10A. Another difference is that ours is wired:
mains -> switch -> fuse -> common node
where the common node is connected to the fan, light,
VPS16-5000 Transformer, and an Unidentified Transformer.
Also, there is no seven segment display. Is there some sort of marking I could use to help Identify it? the front of the box just says "Micromill 2000HD".

We have isolated it to the power circuit by disconnecting everything right after the transformers. It still vaporizes the fuse at power on.

boots · Post by **boots** » Thu 21 Feb , 2008 20:00 pm

A photo of the front panel of the machine will help also.

bradders · Post by **bradders** » Fri 22 Feb , 2008 9:21 am

Maybe these are the drawings, Not sure about the 2 amp fuse though ? The drawings could have been done in the US

Denford Software & Machines

Denford Software & Machines

Micromill 2000 servo controler is dead

Micromill 2000 servo controler is dead

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