If you are going to have a go at repairing your own PS2, it will help a great deal to know which version you have.
As a basic start, count how many screw covers there are on your console underside, there will be either 8 or 10 screw covers. Please refer to the posts below to determin which version console you have.
PS2 with 8 screw covers (left) and PS2 with 10 screw covers (right)
If your PS2 has 10 screw covers, it is an early version, prior to the Version 4.
Locate the sticker on the back of the console
The vast majority of consoles in Europ and the UK are version 3 machines, if your model number reads SCPH-30003 or 30004 you have a version 3 PS2.
If your PS2 has 8 screw covers, it will be a version 4 or Higher. On the back of the PS2 console, there is a black label, as shown below
Now, just find your model number from the following list
Version 4:
SCPH-3000, SCPH-30002, SCPH-30003, SCPH-30004, SCPH-35003, SCPH-35004
Version 5:
SCPH-30000R, SCPH-30001R, SCPH-30002R, SCPH-30003R, SCPH-30004R, SCPH-30006R
Version 7:
SCPH-39000, SCPH-39001, SCPH-39002, SCPH-39003, SCPH-39004, SCPH-39006
Version 9/10:
SCPH-50000 SCPH-50001 SCPH-50002 SCPH-50003 SCPH-50004 SCPH-50006 SCPH-50007
