what should i check when a food-warmer or light-fitting lamp goes dark?
a lamp that normally emits visible light may go dark at the end of its life, but a holder or supply fault can look similar. this is not a test for a non-luminous heater.
model scope: lamps that normally give off visible light, not non-luminous heaters.
stop use and follow the fitting's isolation and cooling instructions before recording safely visible lamp markings and the appliance model. a local switch alone does not prove safe isolation; do not reach through guards or remove covers to find a reference.
the linked guide explains when a manual-permitted lamp change can be considered. cap, dimensions and electrical rating are separate requirements, and similar appearance is not approval. Roband, Apuro and R7s examples do not establish interchangeable lamps or user access to hardwired units.
uncertain isolation, damaged holders or fixed wiring need an electrician or service technician. stop for arcing, burning smell, lead or guard damage. do not force a lamp or open wiring covers to investigate it.
possible causes
- a lamp that has reached the end of its life.
- a fault in the holder or power supply.
- a lamp type that has not been confirmed for the fitting.
solutions
diy warning
working on appliances can involve mains electricity, water and moving parts. always disconnect power and water before you start. in Australia, gas work must be done by a licensed gasfitter, and fixed (hard-wired) electrical work by a licensed electrician. everything on this site is guidance only, and any repair you carry out is at your own risk. we are not responsible for any damage or injury caused by attempting a repair. if you are not confident, please use a qualified technician.
