:: I would look at your 24 volt power supply

The thing is, the power supply I use on the bench is a standard SMPS with=20
fixed 24v output, and the ballasts behave like this in the field, the=20
machines have their own multi rail SMPS which is nothing like the one I=20
use.

The two input electrolytics are 100uF/25v each, and I've replaced them with=
=20
220uF/35v so total filter capacitance is 440uF.

I'll draw up a schematic and post it later.

Colin
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cdb, colin@btech-online.co.uk on 14/02/2011
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