i'm so glad that i was able to chip my psx because that project taught me the basics. i literally did a lot of researching into soldering because i didn't want to destroy the console. i still have the supposed cheapo radio shack iron that i bought and it still works great.
i only used the 30 watt setting to quickly remove the metal shield that was soldered above the mobo that came with the 7501 model. i then used the 15 watt setting to solder the wires from the chip to the proper points on the mobo. 15 watts is a good setting to solder electronic components but even then you can't really hold the tip on a component for too long.
you will burn yourself at one point or another too.
PS1/SCPH-7501 | MM3 modchip
PS2 v9 | 250GB hdd | PS3 component cable | katana 32mb mc
PS3/CECH-2001B | 250GB hdd | 3.65 ofw