I'm working on upgrading a Canon CR4 retinal camera that uses a Polaroid camera to a digital camera. It's a pretty bold project for me since I have very little electronics experience, but it seemed pretty straight forward, so I went for it. Everything was going as planned until I screwed up something on this board. Diode D306 in the attached picture measures a forward voltage drop of .002v, while the other 5 diodes measure just under .600v. Also, D306 has continuity. This board controls the existing Polaroid camera, which is no longer being recognized. So, I'm guessing the problem is at the very least the D306 diode. I tried to find a replacement but I haven't had any luck.
Thanks for taking the time to read this and any input would be greatly appreciated.
Thanks for taking the time to read this and any input would be greatly appreciated.