The most common circuit for 6 foot and 8 foot fluorescent lamps consisted of an inductive choke in series with a capacitor.
As others have already said, loss of capacitance with time reduces the operating current, perhaps to the extent that the lamp starts at 240 volts but not at 230 volts,
Replacement capacitors are available.
5 foot and shorter lamps often use only a series inductive choke. Any capacitor in such fittings is across the mains to improve the power factor and is not required for correct lamp operation.
6 foot and 8 foot lamps require special starters and wont work with so called universal starters.
The most common circuit for 6 foot and 8 foot fluorescent lamps consisted of an inductive choke in series with a capacitor.
As others have already said, loss of capacitance with time reduces the operating current, perhaps to the extent that the lamp starts at 240 volts but not at 230 volts,
Replacement capacitors are available.
5 foot and shorter lamps often use only a series inductive choke. Any capacitor in such fittings is across the mains to improve the power factor and is not required for correct lamp operation.
6 foot and 8 foot lamps require special starters and wont work with so called universal starters.
