LCD Screen (laptop) Issue can anyone help please???

Hi Guys,

After removing the cover to investage lines down my laptop lcd screen i have found some strips (thin plastic strips looking like FILM out of a camera) when i move my finger nail along one of these strips the screen checks perfect, although when i remove my finger from that particular part the lines apear again, what would be the best way of fixing the screen? can anyone advise in this feild?

Regards,

Batman2007

Reply to
Batman2007
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Not clear what you are touching. The plastic film with conductors usually has them visible, but you need to look closely. Sounds like you are describing an open conductor that re-connects if it is not flexed.

Sometimes the active flex-circuit is next to non-conducting plastic film, intended either as insulation/protection for the conductor or as mechanical support so that the flex conductor flexes in the right place (gradually) instead of in the wrong place. Touching the support film might also indirectly move the conducting film underneath.

Most reliable repair is to replace the flex-conductor with new part from mfr. Flex conductors themselves can be repaired but generally (unless you have really good repair materials) will no longer flex at the point of repair. If the conductor is a printed-carbon or printed- silver ink, then you need to use conductive ink or adhesive, perhaps with a fine metal wire. If the conductor is copper foil, then it can also be soldered if you are very careful. Using a razor-knife, the insulating varnish needs to be removed from a length 5 to 10 times longer than the width. A replacement piece of wire such as #45 can be obtained from a one of the strands of the smallest high-grade stranded wire you can find. (To use magnet wire you need to remove its varnish; solder thru is too slow and will solder-thru the flex connector!) A really fine soldering iron can be made from solid copper wire like #30 wrapped around a regular 20W iron tip and sticking out. And then you have to plan carefully and be real quick. Use some paste flux taken from inside regular flux-core solder, and then flatten down the solder.

Reply to
Bob n.

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