expoman: Sounds like the main circuit board could be fried. Happens from voltage spikes on the phone line or lighting some times. Are you sure the voltage transformer you bought is the right voltage. It should output 9 volts DC @ 300 milamps.
I have recently purchased a Beotalk 1200 from a (UK) dealer.
In the instruction book,it states Output 9V.
However,on the power supply,provided with the Beotalk,it states Output: 7.5V
0.5A
3.75VA.
Will the Beotalk accept an extra 1.5V without being damaged?