I know about the lamp or balast thig just want to see if there is a way to test the ballast before i buy a lamp. im verry handy with a volt meter
Sure, you can test by Use the screwdriver and remove the protective cover that conceals the ballast.
Observe the ballast before proceeding. If oil is leaking from the ballast, stop here and remove the ballast. Leaking oil indicates that the ballast is damaged beyond any doubt as the internal seal has been ruptured by excessive heat.
Test the high voltage side for continuity between the wires going to the ballast tombstones. There will be either one or two wires going to each tombstone fixture. Regardless of the number of wires, the colors will be the following: Blue or yellow are the power wires and white is the common or neutral wire. this could differ in many models.
Turn the Volt Ohmmeter to "ohms" and touch the ends of the two probes together. The meter should show continuity or a direct short. Touch the probes of the meter to one of the white wires and one of the colored, blue or yellow, or any wires that comes from the ballast. This should show a short or continuous circuit. If it does not, the ballast is bad and should be replaced.
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