Fluorescent Light In Floor Lamp Ceased Working Today - Page 1
Forum section: electronics / beginners

author: Boris_yo
author_rank: Frequent Contributor
timestamp: January 14, 2012, 03:52:20 pm
content: Have bought E27 15W fluorescent bulb 2700K a week ago and after about half day, it ceased working. No burned smell, simply ceased working and i checked with other lamps.How could new bulb cease working that fast?

author: ipman
author_rank: Regular Contributor
timestamp: January 14, 2012, 07:20:44 pm
content: Gas loss. Not uncommon.

author: Boris_yo
author_rank: Frequent Contributor
timestamp: January 14, 2012, 10:10:23 pm
content: Quote from: ipman on January 14, 2012, 07:20:44 pmSo Gas loss usually occurs after first use of bulb? Is slight touching fluorescent bulb will damage/allowed when it's working?

author: vk6zgo
author_rank: Super Contributor
timestamp: January 14, 2012, 11:04:17 pm
content: Boris,it just looks like you got a faulty one.Unfortunately,you can't see if they are faulty when you buy one.VK6ZGO

author: IanB
author_rank: Super Contributor
timestamp: January 14, 2012, 11:07:38 pm
content: These lamps are usually made very cheaply these days. A proper quality bulb should cost about $15, but then people wouldn't buy them. So they cut corners and cut quality and pare costs to the bone and you get failures.

author: Boris_yo
author_rank: Frequent Contributor
timestamp: January 14, 2012, 11:08:26 pm
content: Got it. I have question though. The more wattage bulb is, the more heat it produces and has higher chance of failure?

author: XynxNet
author_rank: Regular Contributor
timestamp: January 14, 2012, 11:25:39 pm
content: Higher wattage usually just means longer tube.I haven't observed a higher failure rate with the powerful fluorescents. Quite the contrary actually, but that may be because in the old days compact fluorescents with high wattage were only available from quality manufacturers.With compact fluorescents you usually get what you pay for....

author: PetrosA
author_rank: Frequent Contributor
timestamp: January 15, 2012, 03:35:37 am
content: Something to keep in mind - If you have a fixture designed for bi or quad pin CFL lamps, you can NOT change the wattage of the lamp. The electronics in the fixture are designed to make one wattage work only.

author: Boris_yo
author_rank: Frequent Contributor
timestamp: January 15, 2012, 07:42:42 am
content: Quote from: PetrosA on January 15, 2012, 03:35:37 amNo pins in my case, only usual E27 Edison screw.

author: Boris_yo
author_rank: Frequent Contributor
timestamp: January 16, 2012, 06:38:48 pm
content: Okay, dealer replaced bulb but earlier i have noticed that their package says "Not Dimmable". Look:Now, my floor lamp says "MAX 100W". Look:First, what "Not Dimmable" means if my floor lamp does not have dimmer control? Can it be that wattage in floor lamp jumps? What if voltage will have spikes in my house? Will that dimm the bulb?Second, floor lamp was bought 5 years ago at least. I assume "Max 100W" refers to incandescent bulbs? That means i can still use 100W fluorescent bulb?I am trying to figure out if floor lamp was the culprit of bulb's failure. China is where this bulb was made.

author: IanB
author_rank: Super Contributor
timestamp: January 16, 2012, 07:16:56 pm
content: Not dimmable means you can't use it with a dimmer switch. It's true of nearly every CFL, one reason I hate them. Every light in my house has a dimmer switch on it.The 100 W limit refers to incandescent bulbs--it's due to the heat produced by such bulbs. CFLs run cooler so heat shouldn't be a problem.

author: Boris_yo
author_rank: Frequent Contributor
timestamp: January 16, 2012, 08:18:52 pm
content: Quote from: IanB on January 16, 2012, 07:16:56 pmThen i suppose there are dimmable CFLs existing?

author: IanB
author_rank: Super Contributor
timestamp: January 16, 2012, 09:00:31 pm
content: Quote from: Boris_yo on January 16, 2012, 08:18:52 pmI have not seen a dimmable CFL, but I have seen dimmable LED lamps. In fact every LED I looked at recently was dimmable, but they also cost $20 or more per lamp, and are mostly PAR reflector designs.