Sounds like the ones often encountered on laser cable terminations,
particularly on Panasonic DVDs and many portable DVD players ? Usually dark
brown body and beige flip up section. Some that I've encountered, even
combine both slide back and flip up. As you say, sometimes not obvious how
to release them without damage.
Arfa
This one had one of those and a variant in black . Because of the end cheeks
of the large white section having a hook/barb shaped plan view made it look
more like that section moved and was locked into the small black section,
not so. In fact the black part was pivotable along the wide axis. I realised
the brown one was pivotting closure early on, but not the black one,
thinking it was low force insertion as it had a back plane to the ribbon, so
tougher.
2 types of 0.3mm spacing of ribbon conductor ZIF sockets on a digital
camers, brown for the LCD and black for the CCD
http://home.graffiti.net/diverse:graffiti.net/ZIF33.jpg
Each shown with direction of ribbon entry from the top( when in place)
White with brown one top and 4th images.
33 way conductors , on the main white section marked MX/ at one end and E2
on the other. Purple B marks where there should be the same tiny brown pivot
piece as the other end but I managed to break it off.
2nd and 5th images white with black, 35 way as 33 plus 2 outer conductors,
"A" on one end and 33 on the other end of the black section, maybe "C" on
the white section. Purple B marks where there should be a hook piece like
the other end but I thought it needed pulling outwards to release and not
made to do so, so broke off. This one is for ribbons with stripline
grounding plane so thicker construction.
Both just need very light pressure from a small needle to rotate upwards 1/4
turn, as shown in the bottom two images. Only an ounce or so of force is
needed to flip up either type, do not use a finger nail.
Middle image shows the distinctive ribbon land pattern on both types, but
only observable when released
--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/