Re: [CAD_CAM_EDM_DRO] Re: Harrison Lathe and Gecko's

Anything by Compumotor is big bucks, You can sometimes find them on Ebay.
There are 2 on there right now, but only 2 hours to go and shipping to the
UK would probably be high.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3309788129&category=11806

Not my auction btw

Bill

----- Original Message -----
From: "James Owens" <wotisname@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, February 08, 2003 7:03 PM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Harrison Lathe and Gecko's


> Hi Guys,
>
> Just a little up date for anyone that is interested and show that it is
wise
> to ponder before shelling out loads of cash.
>
> My Harrison has a blown Z drive and I was quoted £388 ($631), by Parker
> Digiplan, to replace it with the latest version. They wouldn't tell me
> anything about my drive except it was 9 amp and could work at 120 volts
DC.
> They wouldn't even tell my what the components were. They certainly
wouldn't
> give/sell my a diagram, but they would repair it for me at a standard
repair
> charge of £240 ($390). I'm still shocked at the price when I can buy a
make
> do drive at £99 ($160).
>
> The fault was that the 24 volt power rail blows the fuse. This rail feeds
> only the logic. I pondered for 48 hours and tonight started waving my
> multimeter around the circuit. There was a dead-short between 0 volt and
the
> 24 volts. After testing all the diodes I noticed a Tantium Capacitor had
the
> side missing, the multimeter confirmed it was dead-short. This cap is
across
> volts in and ground of a 7812 regular. It has been pulled as well.
>
> Tomorrow I'll replace both components for less than £0.60 ($1) saving me
> £387.40 or a lot of work getting in a lower voltage drive. I am so annoyed
> at Parker Digiplan I have a good mind to draw up the circuit from the
board
> and publish it on the net, but by tomorrow I'll have cooled off.
>
> Regards,
>
> Terry
>
>
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