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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Those tiny plastic wedge ZIF closures for fine pitch foil/ribbon cable.
Awkward small DVD player with short ribbon. Requiring holding case open
vertically and trying to replace the wedge through the available access space. Drops into the works somewhere and will not come out with turning and shaking. In the process I assume its dropped on to the floor or something. Has to be considered lost or very time consuming dismantling of everything inside , in controlled conditions, and lost on floor anyway probably. So set about thinking of how to make a replacement. Came back to the player for a last attempt and the clip dropped onto the now under-placed sheet of newspaper. Anyway for next time , in earnest, any ideas on making a get-by replacement.? This one ribbon 13.5mm wide, wedge part of clip 13.3mm wide , wedge .3mm down to .2mm over about 1.5mm. Assuming near impossibility of making such a small plastic wedge with uniformity across width. 1/ rubber, conventional or silicone, strip somewhere between .3 to .5mm thick pushed into the slot with jewellers flat screwdriver. Then as cannot think of source of small square section plastic, a matchstick laid over the top and glued on the end cheeks? 2/ Its quite easy to make hotmelt string (when very hot melt) order of .2 to ..5mm diameter of reasonable uniformity over 20mm runs, just not predeterminable , so select afterwards. Squashed into the slot but would it relieve over time and loose closure force. Then match stick over top 3/ any other ideas asuming any salvaged ones you have, will be wrong dimensions.? |
#2
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Those tiny plastic wedge ZIF closures for fine pitch foil/ribbon cable.
Reminder to myself for the next such awkward situation.
Like when refixing circlips I tie a piece of thread around the clip and tie down the thread before squashing over the pin. Glue a piece of thread to the ZIF wedge clip |
#3
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Those tiny plastic wedge ZIF closures for fine pitch foil/ribbon cable.
In article ,
"N_Cook" wrote: Awkward small DVD player with short ribbon. Requiring holding case open vertically and trying to replace the wedge through the available access space. Drops into the works somewhere and will not come out with turning and shaking. In the process I assume its dropped on to the floor or something. Has to be considered lost or very time consuming dismantling of everything inside , in controlled conditions, and lost on floor anyway probably. So set about thinking of how to make a replacement. Came back to the player for a last attempt and the clip dropped onto the now under-placed sheet of newspaper. Anyway for next time , in earnest, any ideas on making a get-by replacement.? This one ribbon 13.5mm wide, wedge part of clip 13.3mm wide , wedge .3mm down to .2mm over about 1.5mm. Assuming near impossibility of making such a small plastic wedge with uniformity across width. 1/ rubber, conventional or silicone, strip somewhere between .3 to .5mm thick pushed into the slot with jewellers flat screwdriver. Then as cannot think of source of small square section plastic, a matchstick laid over the top and glued on the end cheeks? 2/ Its quite easy to make hotmelt string (when very hot melt) order of .2 to .5mm diameter of reasonable uniformity over 20mm runs, just not predeterminable , so select afterwards. Squashed into the slot but would it relieve over time and loose closure force. Then match stick over top 3/ any other ideas asuming any salvaged ones you have, will be wrong dimensions.? I've worked with various ZIF ribbon cable sockets and they all had closures that were designed to stay attached to the socket in one way or another. Removable, but not meant to be removed for service. |
#4
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Those tiny plastic wedge ZIF closures for fine pitch foil/ribbon cable.
Smitty Two wrote in message
news In article , "N_Cook" wrote: Awkward small DVD player with short ribbon. Requiring holding case open vertically and trying to replace the wedge through the available access space. Drops into the works somewhere and will not come out with turning and shaking. In the process I assume its dropped on to the floor or something. Has to be considered lost or very time consuming dismantling of everything inside , in controlled conditions, and lost on floor anyway probably. So set about thinking of how to make a replacement. Came back to the player for a last attempt and the clip dropped onto the now under-placed sheet of newspaper. Anyway for next time , in earnest, any ideas on making a get-by replacement.? This one ribbon 13.5mm wide, wedge part of clip 13.3mm wide , wedge .3mm down to .2mm over about 1.5mm. Assuming near impossibility of making such a small plastic wedge with uniformity across width. 1/ rubber, conventional or silicone, strip somewhere between .3 to .5mm thick pushed into the slot with jewellers flat screwdriver. Then as cannot think of source of small square section plastic, a matchstick laid over the top and glued on the end cheeks? 2/ Its quite easy to make hotmelt string (when very hot melt) order of ..2 to .5mm diameter of reasonable uniformity over 20mm runs, just not predeterminable , so select afterwards. Squashed into the slot but would it relieve over time and loose closure force. Then match stick over top 3/ any other ideas asuming any salvaged ones you have, will be wrong dimensions.? I've worked with various ZIF ribbon cable sockets and they all had closures that were designed to stay attached to the socket in one way or another. Removable, but not meant to be removed for service. Same with this one but my fingernails or finger muscles must be too strong. Begs the question - what is the correct method for removing these wedges ? In a controlled manner so only 2mm of movement either end, and no more, so the sub-mm pauls don't shear off in the process of overcoming the grab force. |
#5
Posted to sci.electronics.repair
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Those tiny plastic wedge ZIF closures for fine pitch foil/ribbon cable.
Smitty Two wrote in message
news In article , "N_Cook" wrote: Awkward small DVD player with short ribbon. Requiring holding case open vertically and trying to replace the wedge through the available access space. Drops into the works somewhere and will not come out with turning and shaking. In the process I assume its dropped on to the floor or something. Has to be considered lost or very time consuming dismantling of everything inside , in controlled conditions, and lost on floor anyway probably. So set about thinking of how to make a replacement. Came back to the player for a last attempt and the clip dropped onto the now under-placed sheet of newspaper. Anyway for next time , in earnest, any ideas on making a get-by replacement.? This one ribbon 13.5mm wide, wedge part of clip 13.3mm wide , wedge .3mm down to .2mm over about 1.5mm. Assuming near impossibility of making such a small plastic wedge with uniformity across width. 1/ rubber, conventional or silicone, strip somewhere between .3 to .5mm thick pushed into the slot with jewellers flat screwdriver. Then as cannot think of source of small square section plastic, a matchstick laid over the top and glued on the end cheeks? 2/ Its quite easy to make hotmelt string (when very hot melt) order of ..2 to .5mm diameter of reasonable uniformity over 20mm runs, just not predeterminable , so select afterwards. Squashed into the slot but would it relieve over time and loose closure force. Then match stick over top 3/ any other ideas asuming any salvaged ones you have, will be wrong dimensions.? I've worked with various ZIF ribbon cable sockets and they all had closures that were designed to stay attached to the socket in one way or another. Removable, but not meant to be removed for service. I forgot that I did try with the closer wedge in place, located on end cheeks, so perhaps nibs not broken. It was not possible to put the ribbon back in through the gap without pushing the closer in place before the ribbon had bottomed in the connector. |
#6
Posted to sci.electronics.repair
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Those tiny plastic wedge ZIF closures for fine pitch foil/ribbon cable.
A thought for re-assembly next time. A weak piece of rubber band from a
party balloon about 5mm wide. That would go around the wedge clip and hold to the blue (usually) piece of celluloid stiffener positioned and held above the lands section of the ribbon. When the ribbon is in place in the socket then slide the closer down the 4 or 5 mm into the socket |
#7
Posted to sci.electronics.repair
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Those tiny plastic wedge ZIF closures for fine pitch foil/ribbon cable.
In article ,
"N_Cook" wrote: Smitty Two wrote in message news In article , "N_Cook" wrote: Awkward small DVD player with short ribbon. Requiring holding case open vertically and trying to replace the wedge through the available access space. Drops into the works somewhere and will not come out with turning and shaking. In the process I assume its dropped on to the floor or something. Has to be considered lost or very time consuming dismantling of everything inside , in controlled conditions, and lost on floor anyway probably. So set about thinking of how to make a replacement. Came back to the player for a last attempt and the clip dropped onto the now under-placed sheet of newspaper. Anyway for next time , in earnest, any ideas on making a get-by replacement.? This one ribbon 13.5mm wide, wedge part of clip 13.3mm wide , wedge .3mm down to .2mm over about 1.5mm. Assuming near impossibility of making such a small plastic wedge with uniformity across width. 1/ rubber, conventional or silicone, strip somewhere between .3 to .5mm thick pushed into the slot with jewellers flat screwdriver. Then as cannot think of source of small square section plastic, a matchstick laid over the top and glued on the end cheeks? 2/ Its quite easy to make hotmelt string (when very hot melt) order of .2 to .5mm diameter of reasonable uniformity over 20mm runs, just not predeterminable , so select afterwards. Squashed into the slot but would it relieve over time and loose closure force. Then match stick over top 3/ any other ideas asuming any salvaged ones you have, will be wrong dimensions.? I've worked with various ZIF ribbon cable sockets and they all had closures that were designed to stay attached to the socket in one way or another. Removable, but not meant to be removed for service. Same with this one but my fingernails or finger muscles must be too strong. Begs the question - what is the correct method for removing these wedges ? In a controlled manner so only 2mm of movement either end, and no more, so the sub-mm pauls don't shear off in the process of overcoming the grab force. It's easy to ham-fist the things, because they aren't exactly sized for the human hand. A very small screwdriver or hooked dental probe to unlatch either end in turn evolved as one good approach, and fingernails useful too if there's room for the finger. Certainly easy to rip right past the tiny detents designed to hold them in the open position during ribbon cable removal and replacement. As you noted, limited access compounds the surgery. I worked on (completely dismantled, modified, used selected sub-assemblies from, etc.) a half dozen different models of camcorders from 3 different manufacturers quite a bit during a several-year-long R&D project, and did find mixed styles, with a different approach needed for each. Some slide, some pivot. |
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