Si wrote:
In message , John Rumm
writes
Aidan Karley wrote:
In article , John Rumm wrote:
After as little as six months some of the individual LEDs in the
lamps were failing.

To the extent that the lamp was failing to deliver it's effect?

These were in a run of wall washers, so the effect remains ok, but
there is growing variation in brightness now depending on how many
LEDs each lamp has lost. It was just surprising how quickly LEDs began
to fail.

There is also a concealed uplighting run of blue LED rope lights in a
raised section of ceiling (these have performed better with no dropped
LEDs yet).

so, a heat effect (the up-facing ones being able to dissipate heat better)?

I think it is just a reflection of how hard they were being driven. The
uplight rope has far more LEDs with each being less stressed. Shame that
can't be said for the PSU that drives them though - that needed
replacing within four months.

--
Cheers,

John.

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