Question about Siemens Gigaset 2420 Cordless Phone

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Sticky keypad on cordless sets

My Siemens Gigset 2420 is about 3 years old and the handset button pad gets very sticky, meaning I have to use force to press the buttons to get the number punched out and sometimes I have to press 5, 6 or 7 times to get the expected result.  Any help to bring it back to the previous original position?
Thank you...Mathew at  

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Re: Sticky keypad on cordless sets

Hi Mathew, After a few years, they all collect moisture under the pads. This goes for almost every cordless phone I have opened, regardless of the model. Normally, I can tell how much gunk is under the pad before I open the phone. If they are filthy on the outside, they are normally filthy on the inside, and the dirt and moisture migrate under and over the dialing pad, and all over the circuit board, it gets real nasty. Not saying your phones are filthy, but that is what I observed after opening thousands of them. Once it gets moist under the pad they grind the conductive rubber to a pulp, the harder you push the more it destroys the pad. Unfortunately, in your particular case, that model is nearly impossible to open without damaging it. It has no screws, but there are many plastic tabs holding it together, and if you pry in the wrong spot, in the wrong manner, and break one tab, the phone is ruined and you will have audio problems (plus just cleaning the buttons will only fix it for a very short period) if by some miracle you get it open and closed without breaking the tabs. The plastic is not just for looks, its condition can effect the operation of the phones audio. I wish I had a do it yourself answer for you, but in this particular case the only solution I can recommend is finding a experienced Siemens cordless repair facility. Good Luck

Posted on Jan 11, 2008

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