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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.

How to reattach LCD Ribbon Cable?



 
 
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  #1  
Old April 5th 04, 01:17 AM
WEBPA
external usenet poster
 
Posts: n/a
Default How to reattach LCD Ribbon Cable?

display attached to the main circuit
board with a ribbon cable, one end of which has come loose. My first
instinct is just to heat up the individual traces but I can't tell if
it was attached with solder or something else. Also I am nervous about
melting the plastic backing or the ribbon cable.

Does aanyone know how these things are normally attached and/or how to
repair them?

Thanks.

--
Nelson

"...one end of which..." So: Which END?

The end normally connected to the LCD is connected with a "zebra" connector
which relies on pressure only. The end normally connected to the PCB uses some
other kind of connector, usually with a "latch" of some sort to secure the FPCB
to the connector.

It is a pretty good bet that soldering to the glass substrate in the LCD will
not advance your cause.
webpa

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  #2  
Old April 5th 04, 01:17 AM
WEBPA
external usenet poster
 
Posts: n/a
Default How to reattach LCD Ribbon Cable?

display attached to the main circuit
board with a ribbon cable, one end of which has come loose. My first
instinct is just to heat up the individual traces but I can't tell if
it was attached with solder or something else. Also I am nervous about
melting the plastic backing or the ribbon cable.

Does aanyone know how these things are normally attached and/or how to
repair them?

Thanks.

--
Nelson

"...one end of which..." So: Which END?

The end normally connected to the LCD is connected with a "zebra" connector
which relies on pressure only. The end normally connected to the PCB uses some
other kind of connector, usually with a "latch" of some sort to secure the FPCB
to the connector.

It is a pretty good bet that soldering to the glass substrate in the LCD will
not advance your cause.
webpa

  #3  
Old April 5th 04, 03:08 AM
Jerry G.
external usenet poster
 
Posts: n/a
Default How to reattach LCD Ribbon Cable?

There are a number of methods used. There is the one with the rubber type
of micro contact strip that works with pressure.

There is the type where there is a ribbon cable, that is attached, by an
adhesive. The process for this one uses a special adhesive that is attached
with a heat die. If this type separates, a new ribbon is required, and the
proper heat die is also required to heat it back. A soldering iron is not
the way to go.



--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"Nelson" wrote in message
ws.net...
I have a Pedometer with a LCD display attached to the main circuit
board with a ribbon cable, one end of which has come loose. My first
instinct is just to heat up the individual traces but I can't tell if
it was attached with solder or something else. Also I am nervous about
melting the plastic backing or the ribbon cable.

Does aanyone know how these things are normally attached and/or how to
repair them?

Thanks.

--
Nelson


  #4  
Old April 5th 04, 03:08 AM
Jerry G.
external usenet poster
 
Posts: n/a
Default How to reattach LCD Ribbon Cable?

There are a number of methods used. There is the one with the rubber type
of micro contact strip that works with pressure.

There is the type where there is a ribbon cable, that is attached, by an
adhesive. The process for this one uses a special adhesive that is attached
with a heat die. If this type separates, a new ribbon is required, and the
proper heat die is also required to heat it back. A soldering iron is not
the way to go.



--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"Nelson" wrote in message
ws.net...
I have a Pedometer with a LCD display attached to the main circuit
board with a ribbon cable, one end of which has come loose. My first
instinct is just to heat up the individual traces but I can't tell if
it was attached with solder or something else. Also I am nervous about
melting the plastic backing or the ribbon cable.

Does aanyone know how these things are normally attached and/or how to
repair them?

Thanks.

--
Nelson


 




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