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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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source of flex cable
I have a casio ex word dictionary that has a broken flex ribbon cable. Is
there anywhere that I could possibly source a replacement. The connection on each end is the same, and I could live with something that will just work rather than the original cable. I think there are 28 pins on the end but it is rather difficult to count. The spacing is the same as if you lined 30 gauge wire side by side. I had tried to solder #30 wire to the connections unsuccessfully. I thought I had it, the ohm meter said it was good, but I think when I moved it to assemble everything the weak solder joints broke. |
#2
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source of flex cable
"Michael Kennedy" wrote in message . .. I have a casio ex word dictionary that has a broken flex ribbon cable. Is there anywhere that I could possibly source a replacement. The connection on each end is the same, and I could live with something that will just work rather than the original cable. I think there are 28 pins on the end but it is rather difficult to count. The spacing is the same as if you lined 30 gauge wire side by side. I had tried to solder #30 wire to the connections unsuccessfully. I thought I had it, the ohm meter said it was good, but I think when I moved it to assemble everything the weak solder joints broke. I also forgot to mention that the way it is broken it makes using conductive paint unfeasible. |
#3
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source of flex cable
"Michael Kennedy" wrote in message . .. "Michael Kennedy" wrote in message . .. I have a casio ex word dictionary that has a broken flex ribbon cable. Is there anywhere that I could possibly source a replacement. The connection on each end is the same, and I could live with something that will just work rather than the original cable. I think there are 28 pins on the end but it is rather difficult to count. The spacing is the same as if you lined 30 gauge wire side by side. I had tried to solder #30 wire to the connections unsuccessfully. I thought I had it, the ohm meter said it was good, but I think when I moved it to assemble everything the weak solder joints broke. I also forgot to mention that the way it is broken it makes using conductive paint unfeasible. I looked at this thing again and it has 27 pins with 2 pins per mm. |
#4
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source of flex cable
Michael Kennedy wrote: I have a casio ex word dictionary that has a broken flex ribbon cable. Is there anywhere that I could possibly source a replacement. The connection on each end is the same, and I could live with something that will just work rather than the original cable. I think there are 28 pins on the end but it is rather difficult to count. The spacing is the same as if you lined 30 gauge wire side by side. I had tried to solder #30 wire to the connections unsuccessfully. I thought I had it, the ohm meter said it was good, but I think when I moved it to assemble everything the weak solder joints broke. I recently had to fix a portable dvd player which ahd intermittent laser supply. traced to a duff flex cable between pickup and pcb.My local parts supplier said NLA. So will have to try elsewhere. I suppose I'm luckier as i may be able to source one from a scrap cd- rom drive or similar. maybe you could look at this option.... good luck. b. |
#5
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source of flex cable
Michael Kennedy wrote: I have a casio ex word dictionary that has a broken flex ribbon cable. Is there anywhere that I could possibly source a replacement. The connection on each end is the same, and I could live with something that will just work rather than the original cable. I think there are 28 pins on the end but it is rather difficult to count. The spacing is the same as if you lined 30 gauge wire side by side. That's not much help to non-americans. 'Gauge' i.e. AWG is a US only measure. The rest of the world uses mm. Can you measure the pitch properly ? Graham |
#6
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source of flex cable
Michael Kennedy wrote: "Michael Kennedy" wrote in message . .. "Michael Kennedy" wrote in message . .. I have a casio ex word dictionary that has a broken flex ribbon cable. Is there anywhere that I could possibly source a replacement. The connection on each end is the same, and I could live with something that will just work rather than the original cable. I think there are 28 pins on the end but it is rather difficult to count. The spacing is the same as if you lined 30 gauge wire side by side. I had tried to solder #30 wire to the connections unsuccessfully. I thought I had it, the ohm meter said it was good, but I think when I moved it to assemble everything the weak solder joints broke. I also forgot to mention that the way it is broken it makes using conductive paint unfeasible. I looked at this thing again and it has 27 pins with 2 pins per mm. That's no 'ribbon cable' I suspect. Do you mean a flexible pcb construction Graham |
#7
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source of flex cable
"Eeyore" wrote in message ... Michael Kennedy wrote: I have a casio ex word dictionary that has a broken flex ribbon cable. Is there anywhere that I could possibly source a replacement. The connection on each end is the same, and I could live with something that will just work rather than the original cable. I think there are 28 pins on the end but it is rather difficult to count. The spacing is the same as if you lined 30 gauge wire side by side. That's not much help to non-americans. 'Gauge' i.e. AWG is a US only measure. The rest of the world uses mm. Can you measure the pitch properly ? Graham I later measuered it and it appears to have 2 pins per mm and 27 pins. |
#8
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source of flex cable
"Eeyore" wrote in message ... Michael Kennedy wrote: "Michael Kennedy" wrote in message . .. "Michael Kennedy" wrote in message . .. I have a casio ex word dictionary that has a broken flex ribbon cable. Is there anywhere that I could possibly source a replacement. The connection on each end is the same, and I could live with something that will just work rather than the original cable. I think there are 28 pins on the end but it is rather difficult to count. The spacing is the same as if you lined 30 gauge wire side by side. I had tried to solder #30 wire to the connections unsuccessfully. I thought I had it, the ohm meter said it was good, but I think when I moved it to assemble everything the weak solder joints broke. I also forgot to mention that the way it is broken it makes using conductive paint unfeasible. I looked at this thing again and it has 27 pins with 2 pins per mm. That's no 'ribbon cable' I suspect. Do you mean a flexible pcb construction Graham Yes I meant flexible pcb. |
#9
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source of flex cable
Can you specify the model number of your Casio? That might spark a
light for someone that might have a non-working unit in their parts box. Cheers, Lawrence |
#10
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source of flex cable
"Michael Kennedy" wrote in message . .. "Eeyore" wrote in message ... Michael Kennedy wrote: I have a casio ex word dictionary that has a broken flex ribbon cable. Is there anywhere that I could possibly source a replacement. The connection on each end is the same, and I could live with something that will just work rather than the original cable. I think there are 28 pins on the end but it is rather difficult to count. The spacing is the same as if you lined 30 gauge wire side by side. That's not much help to non-americans. 'Gauge' i.e. AWG is a US only measure. The rest of the world uses mm. Can you measure the pitch properly ? Graham I later measuered it and it appears to have 2 pins per mm and 27 pins. If it's one of the flexiprints where the tracks terminate as 'fingers' which then insert into a connector, and it's gone near the end, just at one of the reinforcing strips, you can often remake the end by removing the reinforcing strip, and cutting the flexiprint back to just beyond the fracture, with a sharp scalpel. The plastic coating over the tracks can then be fairly easily removed using a blunt curved scalpel blade, to expose a new set of 'fingers'. This 'new' end can then be inserted into the connector, and the reinforcing strip slipped back in behind it. They are made by Multicomp or Pro Power http://www.farnell.com/datasheets/100853.pdf and over here, Farnell keep them. You can cut down ones that are too wide with a sharp scalpel, so I guess you could use a 35 way. You could try www.farnell.com and have a look at their US site. Part number for a 35 way 0.5mm pitch here, is 1455407 Arfa |
#11
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source of flex cable
Michael Kennedy wrote: "Eeyore" wrote in message Michael Kennedy wrote: "Michael Kennedy" wrote in message I also forgot to mention that the way it is broken it makes using conductive paint unfeasible. I looked at this thing again and it has 27 pins with 2 pins per mm. That's no 'ribbon cable' I suspect. Do you mean a flexible pcb construction Yes I meant flexible pcb. Right ! That's VERY different. I'd think seriously about whether you need to do this. These flexible PCBs are custom made in every case. Your only option AFAICS is to replace it entirely with many very fine wires. Hey, or even just patch the problem conductors. Graham |
#12
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source of flex cable
"Arfa Daily" wrote in message ... "Michael Kennedy" wrote in message . .. "Eeyore" wrote in message ... Michael Kennedy wrote: I have a casio ex word dictionary that has a broken flex ribbon cable. Is there anywhere that I could possibly source a replacement. The connection on each end is the same, and I could live with something that will just work rather than the original cable. I think there are 28 pins on the end but it is rather difficult to count. The spacing is the same as if you lined 30 gauge wire side by side. That's not much help to non-americans. 'Gauge' i.e. AWG is a US only measure. The rest of the world uses mm. Can you measure the pitch properly ? Graham I later measuered it and it appears to have 2 pins per mm and 27 pins. If it's one of the flexiprints where the tracks terminate as 'fingers' which then insert into a connector, and it's gone near the end, just at one of the reinforcing strips, you can often remake the end by removing the reinforcing strip, and cutting the flexiprint back to just beyond the fracture, with a sharp scalpel. The plastic coating over the tracks can then be fairly easily removed using a blunt curved scalpel blade, to expose a new set of 'fingers'. This 'new' end can then be inserted into the connector, and the reinforcing strip slipped back in behind it. They are made by Multicomp or Pro Power http://www.farnell.com/datasheets/100853.pdf and over here, Farnell keep them. You can cut down ones that are too wide with a sharp scalpel, so I guess you could use a 35 way. You could try www.farnell.com and have a look at their US site. Part number for a 35 way 0.5mm pitch here, is 1455407 Arfa You are a lifesaver Arfa! You always help me when I've got a problem. What happened is it is partially broken in the middle where it flexes. One of the hinges is broken and thats why the flex broke. Is flexprint the correct name for this type of cable? I wonder if mouser or digi-key stocks these. Mike |
#13
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source of flex cable
"lmcclaf" wrote in message oups.com... Can you specify the model number of your Casio? That might spark a light for someone that might have a non-working unit in their parts box. Cheers, Lawrence This belongs to my friend from Japan. She bought it in Japan years ago. I couldn't find the model number until now... It is a XD-R8100. |
#14
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source of flex cable
That's not much help to non-americans. 'Gauge' i.e. AWG is a US only measure. The rest of the world uses mm. Can you measure the pitch properly ? Graham Conversion charts are readily available, it should be easy to work with either system. |
#15
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source of flex cable
James Sweet wrote: That's not much help to non-americans. 'Gauge' i.e. AWG is a US only measure. The rest of the world uses mm. Can you measure the pitch properly ? Conversion charts are readily available, it should be easy to work with either system. AWG is a pain in the ass. Metric sizes can be directly used in calculations without the use of any 'tables'. Graham |
#16
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source of flex cable
Can't you salvage a cable from an old flatbed scanner or printer and cut
it down? No idea if the pins match but as suggested by another poster, if it's very small try an old dvd or cd drive for a cable and trim to suit. I found it's possible to shorten a cable and scrape the plastic off to expose the contacts again, expose a bit longer and then trim to size. Cheetah |
#17
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source of flex cable
"Eeyore" wrote in message ... James Sweet wrote: That's not much help to non-americans. 'Gauge' i.e. AWG is a US only measure. The rest of the world uses mm. Can you measure the pitch properly ? Conversion charts are readily available, it should be easy to work with either system. AWG is a pain in the ass. Metric sizes can be directly used in calculations without the use of any 'tables'. Why's it a pain in the ass? A given AWG has a direct metric equivalent, I have no problem with either system. I prefer metric for everything, but I guess I just don't see the difficulty. All it takes is memorizing a handful of numbers, it's easier than the resistor color code. |
#18
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source of flex cable
James Sweet wrote: "Eeyore" wrote: James Sweet wrote: That's not much help to non-americans. 'Gauge' i.e. AWG is a US only measure. The rest of the world uses mm. Can you measure the pitch properly ? Conversion charts are readily available, it should be easy to work with either system. AWG is a pain in the ass. Metric sizes can be directly used in calculations without the use of any 'tables'. Why's it a pain in the ass? A given AWG has a direct metric equivalent, An inaccurate equivalent. I have no problem with either system. I prefer metric for everything, but I guess I just don't see the difficulty. All it takes is memorizing a handful of numbers, it's easier than the resistor color code. There is no NEED for ANY code when using metric measures. Would you like to have to look up values for voltage, current, resitance, inductance and capacitance in tables or charts too ? Graham |
#19
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source of flex cable
"Eeyore" wrote in message ... Michael Kennedy wrote: "Eeyore" wrote in message Michael Kennedy wrote: "Michael Kennedy" wrote in message I also forgot to mention that the way it is broken it makes using conductive paint unfeasible. I looked at this thing again and it has 27 pins with 2 pins per mm. That's no 'ribbon cable' I suspect. Do you mean a flexible pcb construction Yes I meant flexible pcb. Right ! That's VERY different. I'd think seriously about whether you need to do this. These flexible PCBs are custom made in every case. Your only option AFAICS is to replace it entirely with many very fine wires. Hey, or even just patch the problem conductors. Graham Nope. Readily available in our neck of the woods from Farnell, Graham. Arfa |
#20
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source of flex cable
lmcclaf writes:
Can you specify the model number of your Casio? That might spark a light for someone that might have a non-working unit in their parts box. I'd suggest revisiting the 30 gauge wirewrap wire solution. That's got to be easier than soldering 50 connections that are less than 1 mm apart! --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. |
#21
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source of flex cable
James Sweet wrote:
Why's it a pain in the ass? A given AWG has a direct metric equivalent, I have no problem with either system. I prefer metric for everything, but I guess I just don't see the difficulty. All it takes is memorizing a handful of numbers, it's easier than the resistor color code. But does it have a really cool and salacious mnemonic? -- One meter, to within 0.0125% accuracy (off by just under .005 inches): Three feet Three inches Three eights of an inch |
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