[bojan]

Thanks to ChrisV, now I think (and hope) I have working power board...
I replaced the broken latch bar with the one I had on my corrosion-damaged board..
I had to cut off the hinges at ends to be able to remove the latch, but this should be OK, they are there to hold the latch in place when there is no cable, so I only have to be more careful when disconnecting FFC in the future.
Also, one contact (actually it is spring which presses the FFC to contact below) was bent a bit, and to rectify this I will need VERY fine tweezers, so I left it as is for now.
All this was done under the stereo microscope.

The next steps are assembly, connections and power up.. next week or over weekend..