Those other manufactures were having the same problem that sony was.
Here is a recall alert that appeared on the dpview site for Konica Minolta
Sony UK has finally issued an advisory notice about a problem with the CCDs used in its digital cameras, camcorders and PDA Clies. Sony supplies CCDs for many other major manufacturers who have already issued announcements about their cameras, but despite the date on this notice, it has only come to light today. The affected Sony cameras were manufactured between October 2002 and March 2004 and will experience problems displaying the image, where it may appear distorted or not at all. Digital cameras affected include the F717, 11 P-series cameras, the U10, U20, U30 and waterproof U60, as well as the five megapixel DSC-V1. Sony will, of course, repair all cameras experiencing this problem free of charge.
Click on the manufacturers' names below to find out which of their cameras are affected:
Canon
Fujifilm
Konica Minolta
Nikon
Olympus
This indicates the chips were the same.