Thanks everyone
Well it appears it is the power supply after all.
I purchased a nice cigarette lighter adapter with a nice long cord with the correct centre +ve plug on the end (had a range of connectors) for $20 at Jaycar, connected it to my 33 amphr battery and Hey Presto!... no more lines
I went to Jaycar and Dick Smiths to look for a non switch mode power supply but no compact ones were available at either outlet, so I got the cigarette lighter adapter instead. I could have wired up the spare plug that came with the RoboFocus but my soldering iron is under the house somewhere
. I also bought those magnets that snap around the power supply wire to supposedly smooth out spikes in the current but they didn't do anything
...so I'll take'em back.
Of course this means I will need a battery in the field again
but at least the wire was 3m long on the cig adapter. The RoboFocus only draws about 0.8 amps so I guess the 33amhr battery should last a while
Thanks again, I am sure you can all relate to my frustration today after having bought this bluddy thing from the US for nearly AU$700 then taken the trouble to setup my workshop (on the dinning table see attached
) and muck around to get the silly contracption to fit the focuser first, with everything all over the dinning room floor etc only to find the bludy thing had issues once I thought it was a goer
......buuuut all's well that ends well
Now to actually listen again to what my wife as been saying all day while I have been cussing and cursing and pretending to listen
Thanks again guys
Mike