30w bulb failure, Ideas why?

[magudaman]

I have a 30w led array similar to this:

Here is the unit with failure:



Awe crap can't believe I shot the video wrong direction sorry guys.

I bought it back in december and was really enjoying it performance in a kitchen light. About 2 weeks ago the unit started to flicker and I blamed the dimmable driver. The light eventually died complete.

So I go climbing around in the attic and replace the driver only to find the source of the problems was actually the led. It seems as if it burned out the bridges that lead to each of the series arrays (3 parallel arrays). I would like to purchase a new led but would not like to have to replace these every 5 months.

Any ideas as to why this unit failed like this? Heat? Crappy manufacturing?

I'm guessing one parallel set failed then that cascaded due to over current on the remaining strands.

 

[blackdragonx1186]

You mentioned attic. Did you have a fan running on the heatsink? I have a 20W that's in my kitchen. It's is only running on around 11W, but the heatsink will burn you after 30 mins or so. I'd think it died due to heat.

 

[easyledlighting]

Most likely due to heat up expansion and cold down contraction, lose contact at the solder part