I have a two year old Canon Power Shot G12. A couple of days ago, out of nowhere, the flip LCD screen turned on misaligned, with the bottom half-inch of the image or so clipped and on the top of the screen, with a thick black line in between the clipped part and the rest of the image (see attached picture). Kinda like a misconfigured computer monitor back in the golden days of manual calibration... Also, it's hard to see in the attachment, but the color in one of the image halves is always missing the red channel, though which one it is varies (just pressing the display button makes it change sometimes).
The camera is ostensibly out of warranty, and I'm confident that I could do the needed replacements myself if I know what part to replace, but I fear the prolem may be on the motherboard, so the question is:
How can I determine whether the problem is 'just' a faulty lcd screen or if the motherboard needs replacement? Could this be a software issue? If so, how can I re-install/update/check the camera's firmware? I've looked around for two days, but I have been unable to find any service guides or anything similar for this model, and the Canon support site I was able to find is less than helpful. Related: Is it possible to get a lower level access to the hardware for diagnostic purposes? How?