Question about Panasonic Lands Phones
Display on my Handsets is gone BLANK-just lighting up, how to fix it?
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Posted on Jan 02, 2017
My 1740 handset volume was also low. As a shot in the dark I changed the speaker and it fixed the problem. I got a new speaker from www.panasonic.com .
Posted on Aug 13, 2008
I had the same problem. Something makes the phone's memory get "stuck." Take the battery out of the phone for a minute and then put it back. Then unplug the phone and plug in again. You need to do this with all extensions. The problem goes away.
Posted on Jan 12, 2009
SOURCE: Screen gone blank
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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