Good advice FC. In fact I didnt bother to ask for details of the alleged service precisely because I put no stock in the claim (which was second-hand in any case) in the first place. The decision to purchase was based entirely on other factors, thus so far Im pleasantly surprised that things are looking promising

Cheers,
Dennis

. Things got better though, some fiddling and tightening of wiring connections and one group is back in action. The other one Im hoping is not far off now that Ive narrowed it to one control box to concentrate on.
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