The New Hotness

Last July I replaced the driver transistor for the cool white LED strings in our Miroco floor lamp. Apparently they got a bad batch of transistors, because the warm white LEDs suddenly stayed on while the lamp was turned off:

Confirming the diagnosis, the cool white LEDs worked fine with the light turned on:

With nine spare SI2306 transistors in hand from the last time in this rodeo and minus the sticky adhesive foam covering the PCB, replacing the other driver transistor was no big deal, whereupon the lamp once again worked the way it should:

While I was in there, I spotted a dent in the input filter cap:

Most likely I squished a wire between the cap and the U-shaped steel strut joining the two halves of the pole. I relocated the replacement cap off the circuit board into an open space with a bit more room:

The fragile wires running to the lamp head got their own sheet of silicone tape (not shown here) to isolate them from the U-strut:

Tuck all the wires back inside, snap the housing together, and it should be good for another uhh half year or two.

It’s hard to be sure about such things, but I now have eight spare transistors …