I missed the part about the 5mm green connectors only handling 12 amps when I built my printer. It ran well for about a month, maybe more, but the other day it cooked the connector that was feeding power to the big mosfet pair. The connectors on each side of that one were also damaged. One of the mosfets was driving my heated bed (11 amps) and the other was driving my hot end heater (2 amps). The board may be slightly damaged where the input was, but the outputs are fine, and the board is working to control things that didn't get broken.
I was thinking I would use the jumpers that can provide an alternate source of power to the big mosfets and then replace one of the output connectors and run my hot end heater from that. The heater uses 2 amps, which should be fine since when running off the jumpers those big mosfets can support 4 amps.
Can I use the big mosfet in the mixed mosfet pair to drive my heated bed? The docs say big mosfets can handle 20 amps, but I want to be sure I'm getting everything correct such that I won't have issues like this again.
If there's a better way to rebuild than what I've come up with, feel free to let me know too. Thanks.