Nokia N70
Handset is restart again and again

Hallo Sir,

I have Nokia N70, music edition handet. I took it before 1 and half year. From 2-3 days it restrts again and again every minutes.

I showed it in Nokia Care Center. They said that they done flash. But again problem is there.

Now yesterday they may be problem in mothe board and it is non repeairable.

Is it possible? that phone is non reperable? or motherboard problem.

What to do next? plz suggest me.