I haven't been following this thread for a while but when I was, I could not find any photos of the underside of the Gridseed PCB. I took some today, hope this is useful to someone:
Sorry they are pretty terrible quality but they should give Gridseed virgins a fair idea of what to expect when they take the bottom heatsink off.
- Bottom of PCB (heatsink cutouts visible) http://i.snag.gy/vMaiM.jpg
- Bottom of PCB (with melted/eroded/torn heat pad!) http://i.snag.gy/IoF3t.jpg
- Bottom of PCB showing "golden pads" (cleaned up with alcohol wipe) http://i.snag.gy/chVId.jpg
Sorry they are pretty terrible quality but they should give Gridseed virgins a fair idea of what to expect when they take the bottom heatsink off.