On Wed, 28 May 2003 12:47:34 +0100, you wrote:

>>And maybe it's just a random intermittent fault that is
>>nothing to do with a particular axis - what is leading
>>you to believe it's motion related - does it give a
>>meaningful error code or something ?
>
>No, it just flashes an "error" LED and goes south until power cycled. It=
 has
>no display for error codes or any such stuff.
>
>As to why I think the fault is related to one axis, this is a one of the
>"desk top flat bed" type plotters that move the pen in the X direction, =
and
>paper in the Y direction, using separate motors with minimal mechanical
>linkage. The X motor does most of the work, and seems to be the one that=
 is
>moving at the time the error occurs.
I wouldn't read too much into this.=20
>You could be correct in it being random and/or intermittent, but from a =
cold
>turn on it will work for the longest before failing. Each attempt at =
working
>after this seems to run for shorter lengths of time.
I'd probably start by sticking  a meter on all the power supply lines, =
both from cold and when warm
- dried out electrolytics in the PSU are a posssible suspect.=20

Another approach would be to get everything really hot with a hairdryer =
to see if you can get it to
fail all the time, then use  freezer to narrow it down.=20

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