I just fixed my white screen problem...
My problem was white display in photo
mode; but in play mode was OK.
I could see on display old pictures, but I couldn't take new pictures (they were coming white also).
I have taken the camera apart as you see in youtube video:http://www.youtube.com/watch?v=HZqOxENaNVI&playnext=1&list=PL48FE02C236B89F6E
In the same video you see him taking off a component from the old objective and attach it to the new objective.
THAT was my problem.
There is a little electronic circuit on that component, and it has a little square black chip.
Few of its legs were not soldered properly.
I just re-soldered them, put everything back, and in less than 30 minutes I have fixed my camera.
I have to warn you....do it at your own risk.
Thereare some, no, all parts are so small, you need a good magnifier to seethem, a nice easy-steady hand and a good solder-iron with a very tinytip.
And of course if you have 30 years experience in electronics (as I do) = much better.
And when you think I spent some time online
with Sony for a repair quote = ?120
I said better I buy another camera from ebay than paying that much...