any idea how dust and dirt will effect these? The bulbs typically get dirty and covered with bugs
1548493
It is a printed circuit board but all components are sealed. I would nt be too worried about any dirt or bugs, only excessive standing water
1548494
I installed my first set Thanksgiving week so they probably gotten dirty yet. However, the contact strategy is identical to the incandescent bulbs and the LEDs seem to be well sealed - I don't anticipate a problem Will update comments/recommendation if issues arise.
1548495
mine have been in service for years with no problems. i have this in a walkway brick light, some of which fill with water and sand covering the led, and i just clean them off. couldnt be happier!
1548496
I have had these bulbs in place for only 4 months or so and in open tulip type lights as well as closed type and have not noticed any issues with bugs or dirt accumulation.
1548497
I put a little silicone bulb grease on the contacts to prevent corrosion. The leds are not as bright, but won't tax your power supply as much and you can put more on one power supply to save money. Incandescent bulbs can melt the bulb sockets if they get too hot.
1561412
This has never happened to mine. Sounds like a bad light. I personally think they are great!
142060
Not that I am qualified to answer an issue like this (I did not make it) but if it happened to me, I'd arrange for a return - the bulbs are fantastic though my 2 are still going strong! Try to get a refund - don't take a chance with faulty lighting - it could cost $$$ in the long run.
1314458
Hi Jane, This is a brand new machine and I hope I don't need to replace them for along time. They are flouresent so should last for years. Based on the last one my wife had the bulbs out lasted the sliding mechanism to adjust the lighting. She has owned several of these over theyears and never had to replace the bulbs.Hope that answers the concerns. Please give me a helpful vote if it did.
352350
COntact the store you purchased the bulbs through. THey should be able to replace them. If that doesn't work, contact Amazon to see what they recommend.
493818
Exactly. Here's my problem buying bulbs online.....you get what you get. Those bulbs are mostly filament. Consider getting them at Home Depot unless you get a great warranty.
1365989
Have not had that problem. Ours installed like a champ and still work 2 years later. But we did go through several bulb returns (broken, cracked, damaged in shipping) before this.
1794084
What wattage and type of bulbs? Sounds like the fixtures are being overloaded.
1344868
Hey there, ive purchased a cheap one and this one and I believe it may be another issue shortening the life of these bulbs... Maybe the fan ? Maybe excess dirt? Both of mine only lasted about 10 months (max) also.
1377140
I've had very good luck with mine, and no issues. Be sure to use dielectric grease on the connections before installing the bulb. Its possible a lack of grease along with thr high wattage could be heating up the connection and shortening the bulb life. Use a plain paper towel when handling the bulb. Oil in even the cleanest skin can shorten bulb life.
1872585
It doesn't seem to. However, I've only had these for about a month or so, and the lamps I'm using them in don't have large openings above the bulbs, so there's a lower chance of dust "settling" on them. I know what you mean about the "tacky" coating, and would probably contact Cree about how to clean them before using any sort of cleaning fluid on them. But, like I said, they don't seem to "attract" dirt/dust, so, so far, so good. Hope this helps.
2030839
Go to utube it will show you how to take bulbs out you can tell if they are bad
510458
Check bulb or contacts maybe dirty. Dirty was my problem since I work in the oilfield.
1825696
Usually new bulbs have a total of 900 hrs but by the time they reach 800 they have lost a lot of life ... I change mine every 800 so it depends on your preference !
1905557
I have not had any issue with that. I would say if some of the cells are out then you need to replace the bulb. If you notice it is not doing as before take a break from use and then resume.
2200757
The power supply in the base of the bulb is very sensitive to static or glitchs.all of mine are still going strong except for the one I touched with a static charge.
1954677
I would open it up and reset the bulb. Dust off the inner connection also. It develops a lot of dust and the connection may not be there.