Question about Panasonic KX-TCD432EB Cordless Phone

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Screen gone blank

Panasonic cordless phone KX-TCD705E screen gone blank. happened before, managed to resolve by pressing buttons. Can't do it again. Help please!

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  • sharifbooz Dec 30, 2007

    No help received!!!

  • John122 Apr 27, 2008

    I have had exactly the same problem, managed to fix it first time round but can't remember which buttons I pressed. Phone is currently working but no display.

  • Anonymous Jan 18, 2009

    Same problem on this same phone (KX-TCD705E) as well as a Panasonic KX-TCD725EM which is almost exactly the same except for having an inbuilt answerphone. I've managed to fix both of them before, by opening the case and very carefully releasing the ribbon-cable which feeds the LCD panel (noting that there is a sliver of plastic locking the ribbon-cable in place, which needs to be gently slid out first, and replaced to lock the cable back in).



    However, the long-term problem seems to be within the ribbon cable itself. It generally ends up being folded back on itself inside the phone, due to space, and it's my hunch that over time, it simply gets metal fatigue on the tracks, or just plain breaks. It MAY be possible to repair the ribbon cable, but it looks like a tricky job... Replacement of the LCD panel would seem the best option (but it'd probably fail again in another 6 years or so!)

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Press 'End Call' (red button) for about 5 seconds. That works.

Posted on Mar 29, 2014

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I had the same fault with the handset losing it's display, phone worked great but could not see to access internal phone directory.
To strip down the phone you need a very clean hard plastic/granite
work surface and a small philips screwdriver and a small flatblade screwdriver.
First of all remove the battery cover and the batteries, put them in safe spot on the work surface (Tip: take the top cover off an aerosol tin to use for holding the screws and small parts you remove)
Remove the front facia by gently teasing it away from the body of the phone, there are 2 plastic lugs either side of the battery compartment, ease them towad the edge of the casing to release the front facia, it should then unclip easily with your thumbnail.
Near the edge of the phone you will see 2 small screws, remove them carefully and set them aside, please note these are longer than two other screws you will encounter later in the disassembly.
Seperate the two main parts of the case from the battery compartment end of the phone and work towards the other end, there are two release points on the outside of the casing, gently insert a small driver into the recess whilst applying a small amount of lifting pressure between the two casing halves and it should spring open. (Note that the case hinges on a clip at the top edge of the phone which helps with its re-assembly later.)
Please be aware that the speaker wires are soldered to the main board and should not be disconnecetd or cut!!!
At the battery end of the phone is a small strip of white plastic tape covering two short screws, these hold the cradle charging contacts to the circuit board, remove them with the metal contacts and keep them safe.
With a little coaxing the rest of the phone should now come out of the casing. Be very carefl not to touch any of the gold contacts on the circuit board or the buttons may not work, you may gently clean these using a dry microfibre cloth. DO NOT SCRUB THEM, simply rub gently a few times.
Unclip the display holder andnote the earpice comes loose, this can be fed through the plastic holder byturning it sideways and pressing it through. DO Not damage wiring!
You should now see the tiny ribbon cable on the display itself, either side of it are a thin white plastic lug which can be slid carefully away from the edge of the display to release the cable. Remove cable gently and re-insert it back into the connector it came from, ensuring it is fully home and is perfectly aligned at right angles to the display, then carefully slide the retaining lugs back into place which will lock the cable back into place.
You can now re-assemble the phone, carefully.
It worked for me, hopefully it should for you unless the display is damaged prior to or during disassembly.

Posted on Mar 09, 2009

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