Can M unit ballasts be changed for an S Ballast safely between a Studio Color 575 (208v) and a Studio Color 575 (110v)?
High End does not recommend attempting this because the M version has a magnetic ballast and the S has the switching lamp power supply ballast. The wiring is different and the igniters are different. The M does not have lamp control and the lamp is on or off with power only. The S has lamp control through the logic board which talks to the lamp power supply.