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I have 48” fluorescent fixtures in my kitchen and I assume they are identical recessed fixtures since they came with the house. I have 32 watt fluorescent bulbs in one fixture that work fine, but in the other fixture it will not work unless I install 40 watt bulbs. Is the ballast going bad???
@ifixit2021 you may run into the issues where a T12 primarily run off a magnetic ballasts and T8 bulbs operate on electronic ballasts. Try another T12 and see if that works or change the ballasts to the T8 type.