Hi,
The keyboard of my Ericsson cordless DECT telephone handset has some strange
behaviour. At arbitrary times when I try to pick up a call, the hook key
refuses to respond. The '1' and the '3' keys don't work at the same time.
After some time everything works fine again. I cannot find the cause of this
behaviour. It can also occur when I pick up the phone from the base station
to make a phone call.
Can someone tell me what could cause this problem and second, how to open
this handset?
Greetings, Giuseppe

It is very common that the keypad rubber assy goes defective on these
types of phones, and remote controls as well. The conductive pads
start to wear out. Sometimes by cleaning the contacts under the pads,
the problem is fixed, but if the pads are bad, the fault will return
right away.

There are some remote keypad repair kits on the market, but these are
expensive. Also, I have read some tricks that were anything from using
aluminum foil glued to the pads, to using carbon from a pencile, and
conductive glue. I found non of these were reliable over the long
term.

I have no idea if Seimens will sell the keypad rubber as a replacement
part. Generaly these manufactures will tell you to send them the
phone for proper service. Many of the factory servicers also have a
flat rate service. You should enquire.


Jerry Greenberg
http://www.zoom-one.com

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"giuseppe" wrote in message ...
Hi,
The keyboard of my Ericsson cordless DECT telephone handset has some strange
behaviour. At arbitrary times when I try to pick up a call, the hook key
refuses to respond. The '1' and the '3' keys don't work at the same time.
After some time everything works fine again. I cannot find the cause of this
behaviour. It can also occur when I pick up the phone from the base station
to make a phone call.
Can someone tell me what could cause this problem and second, how to open
this handset?
Greetings, Giuseppe

"Jerry Greenberg" wrote in message
om...
It is very common that the keypad rubber assy goes defective on these
types of phones, and remote controls as well. The conductive pads
start to wear out. Sometimes by cleaning the contacts under the pads,
the problem is fixed, but if the pads are bad, the fault will return
right away.

I think, this is not the problem, because all three buttons don't function
and go back to normal at the same time. I was more thinking of a solder
crack in the common of these three buttons.

I have no idea if Seimens will sell the keypad rubber as a replacement
part. Generaly these manufactures will tell you to send them the
phone for proper service. Many of the factory servicers also have a
flat rate service. You should enquire.

The problem is that (Sony)Ericsson (not Siemens) doesn't give any service
anymore on these types of DECT phones. So I would like to know how to
service this one myself.
Thanks anyway, giuseppe