No siren sound, transformer lets malfunction the display

Good evening all together, dear Zipato Crew,

in the past i´ve done nothing new on the zipatile it works very fine for me and did a perfect job.

Tomorrow since one week i had an issue, that i couldn't activate the intruder alarm, the panic zone stop the intruder activation, why? i´don't now. Today i try to fix it and i think ive solve the problem. But in search of the solution, i now try to find out since about 3 hours why my zipatile doesn't make a noise when an alarm triggers.

During the search i realized, that the display switches between the widget, the home and the clock screen all the time automatically, just by looking at the screen, very strange! I could hear all the time a low noise. As i pull out the power, the low noise went off and more important the automatically screen switches stop, everything was fine again. After putting it into the power all the problems with the screen switch and so on starts again.

The second problem ist the sound, when i play a sound, e.g. beep, nothing happens, except again a low noise, i can here a very low buzz/whirr, just for the time the sounds playback, e.g. beep approx. 1sec. , if the sound ist longer, e.g. door bel the buzz/whirr is longer.

Is the transformator and the speaker broken? :(

Or what could be the problem because of the buzz an the screen switch and no sound?

Because of tall the problems, actually my zipatile is off, the battery pack is down 0%!

Hopefully a solution could be finde very soon, and i can use the zipatile again.

Many thanks in advance for all help.

Best Regards Andreas