.02 mm pitch flex print PCB repair
Michael Kennedy wrote in message
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"N_Cook" wrote in message
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Michael Kennedy wrote in message
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I have a Plasma tv that somehow I managed to partially tear one of the
flexi
prints. I am not too sure how it happened since I was working on the
PSU.
That aside, I think the PSU is fixed, but now the .02 mm pitch flexi
print
is torn..
After doing lots of thinking and researching I think the way to go is
using
a .02mm pitch zebra strip and connect wires from it to the connector.
Now the question is does such a zebra strip exsist?
Does anyone know where I can find such a zebra strip? Any know products
I
could salvage one from??
I hope to connect wires to the zebra strip and then connect those wires
to
the more reasonable sized .5mm pitch connector.
What are the end points of the ribbon ? eg 2 connectors or connector and
glass ? and does it flex in use? is it microstrip/stripline in structure
with a grounded backplane?
Fortunately there is no backplane, so I think we can get away with
modified
circuit. I will try to get a picture up on the internet soon.
The cable is directly connected to the glass on one end and has a standard
.5 mm pitch *I think nothing to measure with at the moment* connector.
In the middle just after the tear there is a blob IC attached to the
cable.
The cable is then attached to an alunimum plate for security. I was
thinking
of taking advantage of this alunimum plate by using it as a surface to
mount
a zebra connector..
The cable is curled in a c like shape so I think briding the original
connection is the more dfficult route. I think with a zebra connector and
a
pcb soldering the wires from the end connector to the pcb and the applying
pressure to the zebra strip is a very viable solution. There is the
perfect
place to mount it on top of that aluminum plate.
Anyhow without pictures this is kind of hard to imagine. I will upload a
few
pics..
Thanks for the reply!
Mike
Anyone successfully salvaged that expensive 3M anistotrpic conductive tape?
hot air , is that effective to dislodge the bond but not melt the
tape/destroy the anisotropy?
I just measured a standard size zebra and that had .2mm spacing, I could not
find my tin of watch bits, what is the spacing on those zebras?
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