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Repair · Lighting
A fitting that has stopped working is usually not broken. The switch, the connection at the box, or the driver are all more likely, and all cost less to put right than a replacement.
What usually fails
Switches wear out long before fittings do, and a switch that has to be held or works at one angle only is the cause more often than anything in the ceiling. That is a device replacement, and it is covered in outlet and switch repair.
The connection at the ceiling box is second. Old fixture whips go brittle, and connections made without a proper connector loosen with the heat of the fitting itself. That is quick to remake while the fitting is down, and it is the moment to look at the ground path too, which grounding and bonding explains.
The driver is third on modern fittings. Where the lamps are not replaceable, a failed driver often means the fitting is the item rather than the repair, and at that point light fixture installation is the honest quote rather than dismantling a fitting that was never meant to be opened.
How it runs
It is the most common cause and the quickest to prove, so it gets ruled out before anything comes down from the ceiling.
Whip, connections and ground checked. Most of what we find here is quick and cheaper found now than later.
Where an integrated fitting has a failed driver we tell you replacement is cheaper rather than billing for the attempt.
Run through the whole switch and dimmer range rather than just switched on once.
When replacing wins
Where lamps are integrated and a driver has failed, labour to diagnose and source parts frequently exceeds the price of a new fitting, which runs $100 to $650 installed. Figures are example ranges. We say so rather than billing for the attempt.
The same applies where the box behind it is wrong for the fitting. A heavy multi-arm fitting on a box never rated for it is a replacement job regardless of whether the lamps work, and ceiling fan installation needs a different box again.
Flicker is worth separating from failure. A fitting that flickers rather than dying is usually a control mismatch and not a fault at all, and flickering lights covers how to tell the harmless kind from the kind that matters.
Where the fitting is a fan rather than a lamp, the diagnosis is different again and ceiling fan repair is the right page: wobble, hum and no response each point somewhere specific.
Related work
Common questions
It was the switch. Ten minutes and a fraction of the new fitting we had already bought.
Told us honestly the fitting was not worth opening rather than charging to try.
Found a brittle whip above the box and replaced it while everything was down.
Repaired in place and fitted a properly rated box while they were up there.
From the blog
Next step
Tell us whether it is dead, flickering or intermittent. Each points somewhere different before anyone comes out.
Switch ruled out first · Replacement advised only when cheaper · Box checked