Owners of the JA Michell SE turntable..question.

Here is the observation from my turntables:
Michell Gyrodec(full version) with AC motor and QC power supply does not have the switch light up.
Orbe SE MKII with DC motor does have switch light up.

I'm not sure whether it is the AC/DC motor circuit difference or whether it is one of those things that Michell improved over the years.(AC motor being older design)