Dark patches on bulbs

I recently put new bulbs into my bathroom vanity light bar. They are GE soft white LED G25 60W equivalent frosted bulbs.

The first one developed dark patches as soon as I screwed it in. I thought maybe that was because I did not turn off the wall switch when I was installing it, as well as holding it with my bare hand. So with the next bulb I turned off the power and also held the bulb in a cloth as I screwed it in. It still has some dark patches on it, although much fainter than the other bulb.

Are the bulbs defective or am I doing something wrong?

pix…

Can you post a picture so we can get a better idea of what these patches look like.

I can’t see a way to add a photo. When I click on “insert image” it just asks for a URL.

There is a link in my signature on how to post pics on BLF.

Not sure that worked…

Perhaps the inside surface is already dirty from the factory.

Do you have any other bulbs you haven’t installed yet? Hold a flashlight tight against the plastic dome to check for spots before powering it up.

But it was almost as if I could see the marks spreading as I installed the bulbs, especially the one on the right. It doesn’t look like dirt.

I’ve heard that excess soldering flux can produce smoke that forms cloudy spots on a flashlight lens or reflector. Perhaps these bulbs were sloppily assembled.

It’s disappointing that a lightbulb designed for use in fixtures where the bulb is purposely visible would immediately become unsightly. That would bother me every time I entered the bathroom. :stuck_out_tongue:

I would return them and find an alternative.

It might be because the bulb’s nearing end of life? I saw it happen with some of my fluorescents but yours is LED so could be similar?

No - these bulbs were brand new…

Then looks like just a bad batch probably. Also manufacturing defect maybe regarding the gas and/or coating?

they are quickly collecting darkons.
if you ever break these bulbs the darkons will be released.
and the photons from all your flashlights will not be enough to offset them!