Raspberry Pi Composite?

I have built the Ben Heck portable Raspberry Pi.  I had it working, but then I bumped the case and after that, the video will not start up.  My wiring to the monitor is all still good, and I know that it is getting power.  The only thing is, that during the bump, the video data and ground cables may have shorted.  Could this have caused the problem?  Whether it did or not, can anybody please help me fix it?

A short may have damaged a component. Be pretty hard to troubleshoot. May have to replace the Pi.