there is a chart for this and u will need to find it,
un-plug monitor from a/c power ,remove vert yoke plug,
and with a digital mulit meter,measure it >ohm's<,and compare it to the chart..
it should be with in1ohm..better yet if u had a inductance meter
this would tell u the trick..again there is a chart,if u cannot find it?
I will see if I can find mine..
if not pm rickn,he has a chart
ed