Searched high and low to try and find something to help fix my problem with a Version 7 fat PlayStation 2 I have, but have come up with nothing. Basically, here's the thing: I opened my Version 7 PlayStation 2 to solder the fan's wires internally(had them soldered to a USB cable because the plug where the fan's supposed to be plugged into was completely removed from the motherboard), and when I finished soldering everything back in place and closed it up, it wouldn't turn on. There was absolutely no red light on the power button, both the power and eject buttons don't respond, and flipping the power switch on the back of the PlayStation 2 does absolutely nothing. I tried to use the power supply from a Version 4 PlayStation 2, as it has the same shape as the Version 7's power supply(but with more components); didn't work(the Version 4 power supply is in perfect working order). So that rules out the power supply. The ribbon cable that connects to the Power/Eject button assembly is perfect(multimeter showed current flowing on all pins), so that's not what broke. It can only be a fuse, but the question is this: which fuse blew? Which fuse would cause the PlayStation 2's standby LED not to turn on even when power's applied to the console? EDIT: Since nobody's answering, I might as well move on to another PlayStation 2 I have, this time a Version 2. Everything works: DVD-ROM drive reads discs, controller ports work, everything works BUT it refuses to load any and all games I put in it. This is what it does: PlayStation 2 DVD-ROM: crashes to a black screen after PlayStation 2 logo PlayStation 2 CD-ROM: returns to menu after PlayStation 2 logo PlayStation CD-ROM: identifies discs as audio CDs/crashes at PlayStation logo I've done everything I know to try fix the damn thing: realign the laser(completely useless as the cog ALWAYS returns to its normal position), clean the laser, even adjust the POTs(it has an easier time recognizing discs after the POT adjustment - used to reject all PlayStation 2 CD-ROMs with DREs or the Red Screen), but no matter what I've done, I STILL can't get the damn thing to go past the PlayStation logos or identify a PlayStation disc properly. I did, however, notice a ribbon cable that looked like it was frayed that connected from the motherboard to the DVD-ROM drive. Wonder if that has something to do with my problems As a word of note, this PlayStation 2 used to have a Neo 4 modchip(I know, it's OLD) installed in it, but when it was there, it would identify PlayStation 2 CD-ROMs as PlayStation CD-ROMs, so I had to remove it. This PlayStation 2 is bothering me more than the Version 7, so I'd like to get this one up and running ASAP.