hi, i've recently got a nintendo 64 from a friend, it's a 110v unit, i've plugged a 220 to 110v small converter and when i turn it on it flashes the red light for about two seconds, make a little electric noise and then the light shuts off. If i disconnect the unit, wait for about 20-30 seconds and try it again, it does the same thing. Did anyone knows what can it be? thanks in advance.
Those converters are only designed to run motors and inductive loads (like a hairdryer, shaver) and typically fail with electronics. Even worse when combined with the fact that the N64 PSU is a switching supply, not a linear reg like the SNES and such
Alternatively you could try getting hold of a native 220v PSU. The output voltages are the same for all region N64 consoles.
Smell the power supply as that specific fault is usually caused by blown capacitor (meaning that someone has already put it straight to a 220v wall outlet, damaging it). If you feel some odd or "sweet" smell and feel that a oily liquid is leaking from it, the capacitor leaked. So indeed follow Oldgamingfart's advice and pursue an native 220v power supply.
i don't think that it was plugged to 220v, the owner (a friend of mine) was very careful with this console. So i will try a better converter or search for a 220 PSU, thank you for all the answers!