- Autopsy on a failed 50W LED floodlight - 1 Update
| Ancel B <protofabtt@gmail.com>: Jun 23 10:43AM -0700 On Friday, June 23, 2017 at 4:09:03 AM UTC-4, N_Cook wrote: > metal at rear of the LED array , probably at original placement due to > blob shape of the goo , only maybe worsened in use. So heatsinking via > the periphery only , ie delayed heatsinking. The 12v 5A SMPS units from China as well only have a thin seam of white thermal paste at the edge of the switching transistors to make it 'appear' properly done, there is none between the transistor and the heatsink = early failure. I have to reapply paste on all before I use them. |
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