Reprapdiscount Ramps 1.4 Fire - Root Cause??? (1 reply)

Hi, I purchased this Ramps 1.4 board stack from Reprapdiscount. It was used about 4 to 5 months, then caught fire. Is there a known defect in the Ramps 1.4 boards? The fire is on the Heat Bed Circuit, and a Prusa MK1 heat bed is used, that is in good shape with a good resistance.

Here are some pics: [www.flickr.com]

Any answers would be greatly appreciated. I just want to make sure it doesn't happen again.