My SD card just smoked itself.
I have Pi Mode B+ V1.2 here. It has had a camera and WIFI dongle attached. Since last spring it has been running an image from the folks at resin.io serving up camera snapshots in a simple web page created using node.js.
This setup ran all last summer taking views of the garden from our balcony. Then we moved and a few weeks back I set it up taking views from our new balcony.
Two weeks ago it went off line. I took it indoors, checked it over, rebooted it, one or other LEDs came on. Never did come back on line.
Today, I brought it into the office for a serious look, removed the camera and WIFI dongle, hooked up screen keyboard and mouse, powered it up.
No LEDs come on. But smoke starts coming from a very hot SD card. Ooooops!
Now, I read hear recently that someone had the same burning SD issue. I didn't believe it. Now I know better!
Removing the SD and powering up again I have red and green LEDS hard on. So I guess there is life in the old girl yet.