Vrmax

So i finally got a chance to work on the fan issue with the fz1 3do console. Even while it was off but power cord plugged in the fan would be running. I took the console apart and noticed near capacitor c1, c35, and c36 there were leakage on the motherboard from them. I purchased replacement caps from console 5 website. If you google 3do fz1 cap kit it will come up. I removed the old caps i mentioned and cleaned all the acid off the board. I used my finger nail carefully to scrape it away from the board and use the electronic cleaning alcohol. I actually got most of it off at least enough to make sure there was no bridging or canceling of circuits. I soldered the new caps on. Use the diagrams or videos that show what side is positive and negative. I put the console back together and plugged it in without turning it on and the fan was not on anymore. I turned it on and played a game for a while and still no noise. Now mine was the caps but may be your same issue.

I have the fz1 model as well. I took everything apart down to the motherboard and no blown capacitors but noticed that there is a 25v or 250v capacitor can't remember what it says but is the largest capacitor on it that has some gumminess under it. I cleaned it up a little bit but still the issue. Not sure if that has anything to do with it or if the power supply unit is bad. My unit works though just fine. Although have not played it long hours. Still looking into why this is doing it. I'm sure it has something to do with over heating. Which if that capacity is bad or going bad could trigger the fan.