Better design?

[ptonsparky]

Obviously the life expectancy is considerably less than expected. The two year old unit on the right failed a month or so ago. Portions at a time. Odd for what I expected as a driver failure. Thinking now it was the circuit board assembly that fed the LED strips. I'll verify today, maybe.

Both units have the same catalogue #. Light distribution is different if you look at the shadows cast on the ceiling but once away from that, I see no difference. Subjective.

Have they improved the LED that much in two years or are they driving them harder?

 

[ptonsparky]

 

[ptonsparky]

I now have a SPL of LED strips that work via a 9 volt battery.

 

[wwhitney]

One likely possibility: each chip on the older lamp has 1 LED, while each slightly larger chip on the newer lamp has, say, 6 or 12 LEDs. Bigclivedotcom does a lot of LED teardowns on his youtube channel.

Cheers, Wayne

 

[ptonsparky]

FWIW, the driver has no output voltage.

 

[cadpoint]

I remember a PE talking about a class they had where they could size and determine circuit components life cycle,
the conversation seemed to be negative in nature.
The "LED" statement of life cycle are usually correct, the circuitry support not so much.

I just touched both of those on a re-light, I thought gezz this thing an oven elements...

 

[James L]

The "LED" statement of life cycle are usually correct, the circuitry support not so much.

Exactly.
50,000 hour LEDs - what do people say? LEDs last forever. Pretty close, it seems.

But the driving components might be 5,000 hour

There's also a fan built into those bulbs, or should be once they get above 40 or 50 watts. Could be a bad fan, or bad connection on it.

Could be ambient temperature is too high