It melts around 275 deg +/-
Pete wa2odo
¡ sent from Android on 4G¡
?
Indium solder, haven't heard of that in a while!? I shall try and find some.?
Peter
?
Try some indium solder and if necessary a needle heated with a soldering iron. I have repaired accutron coils with it as well as other watch coils.
Pete
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On Feb 16, 2016 10:12 PM, "Peter Gottlieb
hpnpilot@... [hp_agilent_equipment]" <
hp_agilent_equipment@...> wrote:
?
I may do that. Tried the hot air, too crude even with a very small tip, and it
started softening the glue I used to keep everything stable.
Peter
On 2/16/2016 9:22 PM, EB4APL eb4apl@... [hp_agilent_equipment] wrote:
>
> Why don't you try with silver conductive paint? Auto shops use it for
> repairing rear window heaters and some are advertised for repairing printed
> circuit boards. probably you need to glue the problem area to a stiff back
> before repairing.
> Or if the flex circuit is heath resistant you could use the solder paste with
> a hot air station.
>
> Just an idea,
> Ignacio
>
>
>
> El 17/02/2016 a las 3:09, Peter Gottlieb hpnpilot@...
> [hp_agilent_equipment] escribi¨®:
>>
>> I have a challenging soldering job and am looking for advice from someone who's
>> tackled something like it before.
>>
>> I have a modern high-end device which has a complex and unobtainable custom LCD
>> display. This display connects via a flex circuit to a connector on the main
>> board.
>>
>> Unfortunately, the mechanical design is not great and where the flex circuit
>> attaches to the LCD glass there is no strain relief so a couple of flexes and
>> several traces broke. These traces are approximately 4 mils wide, spaced 4 mils
>> apart. Under a stereo microscope I was able, using a new X-acto knife and VERY
>> gently, scrape off the insulation on each side of the broken traces. I secured
>> under the movable part with some cyanoacrilate. I now need to solder perhaps a
>> wire across the broken traces. Using some surface mount paste (looks like BBs
>> under the microscope) I managed to tin the traces but my soldering tip looks
>> like I'm using a copper roofing iron, and that's after I sharpened it to what
>> looked like a super fine point. Heck, at 40X even a pin looks rounded. #30
>> wirewrap wire is far too large but I did find some perfect wire strands from
>> some superflex silicone RC wire. It reads 3.5 mils dia on my micrometer.
>>
>> So, this seems like a tough job but I did get one piece on after several tries.
>> Has anyone who has successfully done something this have any pointers? Is there
>> an iron meant for this kind of micro work? Things I should or shouldn't do?
>>
>> Peter
>>
>
>
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