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Showerhead LED lumen depreciation

Showerhead LED lumen depreciation

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When the first LED retrofit lamps showed up in Walmart, I bought a pair of Lights of America PAR 30s using a cluster of 5mm LEDs as they were the only 6500K ones I could find in stores. I have used one as an indoor plant up light for about 4 or 5 years running 3-7 hours a night on a timer. It still fully lights up...but I wondered how much it has depreciated so I put my unused one next to it (left). I was astounded that it's not only lost half of its initial light but also color shifted to a much bluer/cooler light. This lamp was dim to begin with so if it was used for general illumination, it would be pretty much useless at this point.

Utilitech_LED+.JPG 6500K_PLS_lit+.JPG image.jpg LOA_Super_Q_Lite_27w+.jpg

Light Information

Light Information

Manufacturer:Lights of America
Lamp Type:LED
Color Temperature:6500K
Factory Location:China

File information

File information

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Album name:arcblue / Bulbs in captivity
File Size:714 KB
Date added:Aug 05, 2016
Dimensions:2048 x 1530 pixels
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Aug 05, 2016 at 09:27 AM Author: dor123
How didn't you noticed that you first LED lamp degradated considerably until you operated your spare lamp side by side?

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (

I lives in Israel, which is a 230-240V, 50hz country.

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Aug 05, 2016 at 09:40 AM Author: Lumex120
It's generally not something you notice. It happens over time and so you just get used to it. I had some old bookshelf speakers connected to my computer and I never took off the covers. They sounded fine to me until one day I hear about this thing called foam rot. I decide to inspect the speakers to see if they have this. I open them up, and the cones are cracked and the surrounds are completely gone. These speakers were used when I got them but they didn't have this problem when I got them (I checked the insides of them when I purchased them). So I order some new drivers and I decide to do a comparison to see how they sound side-by-side. I was amazed at how much better the fixed speaker sounded compared to the old one. It sounds like the same thing happened here.

Any machine is a smoke machine if you operate it wrong enough.

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Aug 10, 2016 at 08:47 PM Author: arcblue
Indeed, it happens so gradually you really don't notice until you put in the new lamp. I was fairly certain it had color-shifted slightly to the blue and was dimmer than when first installed, but the degree of how much it had depreciated it what astounded me.

Zarlog, I have had the same experience with the foam surround on speakers. I have repaired speakers with new surround or superglue with only temporary success before they start separating and sounding crappy again, so ultimately replace the entire driver. I have a nice pair of Dahlquist DQ-6's that I ultimately installed poly drivers in and I hope those won't deteriorate like the paper+foam design. They sure sound much better!

I'm lampin...

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Aug 11, 2016 at 12:45 AM Author: AngryHorse
Yeah, I have also had this in my old kitchen spot light plated!, but mine did this within 2 years!
The old resin `dome` diode were total garbage compared to the later SMT ones.

Current: UK 230V, 50Hz
Power provider: e.on energy
Street lighting in our town: Philips UniStreet LED

"Beauty fades, dumb is forever".......Judge Judy Cheesy

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