8 replies to this topic

[mhealey]

So i went to install a mosfet in my p90, i followed this guide EXACTLY, however when i tested it the mosfet and wiring caught on fire...is this guide incorrect? has anyone here put a mosfet in their p90 and done it differently? or should i just assume the chip was defective?

[jwberry]

I have yet to install a mosfet in a P90 but have installed dozens of mosfets in other guns. Looking at their diagram it is correct. When your wiring melts it is caused by a short somewhere. What wire melted?

[mhealey]

The gate wire melted, which was weird because i thought there was not supposed to be a lot of current going through the gate wire

[jwberry]

Did it melt as soon as you plugged a battery in or when you pulled the trigger?

[mhealey]

Right when i plugged in the battery

[jwberry]

That usually happens when the power and the gate short.

[mhealey]

Could that mean they were touching within the chip? It was covered with heat shrink wrap so it's not something i would have been able to see from the outside

[jwberry]

yes

[mhealey]

Thanks for your help, even though the mosfet is past saving i now have some idea of what happened