Luckly I've bought 3 new DR1000S in total - one for me, the other for gift and the rest one for spare(I'm so crazy for the device, DR1000S as to have spent most of my money on it and its accessories). However, the last spare one didn't turn on as I posted here in the past.
So I bought a screen broken and used DR1000S to repair it, to utilize the normal inside board in the screen broken one.
All I have to do is to open the both devices and change their inside boards each other? I wonder if there be some risks which I don't know at this time..
I attached some pics of my DR1000S and post the result later.
I wish it'll go well...
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(added)
I changed my mind and I just reserve the 2 'broken' devices as spare parts for my normal one. I don't think I should open the two devices now although one of mine works well now..^^