Hey everyone,
I’m trying to fix an under-cabinet fluorescent light that won't turn on, even after replacing it with a brand-new F8T5 tube from Home Depot.
Here is the setup and what I've tested:
• It's controlled by a 3-way switch.
• I tested the wiring with a non-contact voltage tester (pen), and it does show that voltage is present when the switch is toggled on.
• We recently had our main electrical panel replaced.
I'm considering a few possibilities and would love an expert's take:
Tube compatibility: Do 3-way switches require a specific type of tube? Or is it possible the Home Depot tube is just a dud and I should try ordering another brand from Amazon?
Wiring issue: Since we just had the electrical panel replaced, is it possible the voltage pen is picking up a "hot" wire, but the circuit is actually missing a neutral connection or ground? (Btw, the other lights on the same breaker is good)
Dead ballast: Could the fixture's internal ballast be dead, (I am thinking unlikely given all 4 of under cabinet lights are not working)
Appreciate any troubleshooting advice!