I've built my Gertboard. Checked it over three times, all the surface mount components are cleanly mounted, checking for shorts finds nothing, the resistor packs are all mounted so the dot on the pack matches the marking on the board, the IC's are in their proper places, and the right way round. The various places marked 3.3v are as expected, the Pi's power supply is 1200mA
Yet I cannot get it to work using the test leds-rp.py from here: http://raspi.tv/tag/gertboard-software
When I place my hand near the LED's they light up, I have made a video demonstrating this: http://youtu.be/Xlm41Cr8fOQ
this, to me, suggests I have done something wrong.