Sony Playstation 2 Repair Manual page 13

Remove the 4 screws as indicated in the diagram and
lift the power supply board out and check the fuses.
The power switch and other checks are the same as on
the other board.
Every version of PS2 has a slightly different set of fuses in it. To convert the numbers on the fuses to an actual
value take the number and multiply by .04. For example, if the number on your fuse is 25 CCP2E25 then you
take 25 * .04 =1.0 or 1amp. You would use a 1 amp fuse to replace this one. If you end up with a weird
amperage like .52 just use a .5 amp fuse. You just need something close as possible to the actual value to keep
things working safely.
You can get your replacement fuses at Radio Shack or any electronics store. Replace them and if they blow
again then you have more serious problems with your power supply board and it is suggested you seek out a
replacement. I suggest using www.videogamerepair.com for this, but there are others. Just search the internet
for PS2 parts and find a replacement board. I found them to be about $25-$35.
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