MoparManiac
NAXJA Forum User
- Location
- Amherst, NH
Re: THe NAC Lots-O-Post Thread
Damnit why didn't I think of that.
Damnit why didn't I think of that.
THe NAC Lots-O-BFG KO2 Thread
- Thread starter ROBZ95Xj
- Start date
sheepjeep
NAXJA Forum User
- Location
- Boston, MA
Re: THe NAC Lots-O-Post Thread
what a n00b
what a n00b
- Location
- Rainy side of Washington
Re: THe NAC Lots-O-Post Thread
Looks like they are actually using the chip properly, to drive the gate of that irfiz34n n channel mosfet. You probably popped that by miswiring it.
Try replacing the mosfet first. If you want to diagnose it, just use an oscilloscope to follow the signal from the input of the ixdi404pi all the way to the injector drive output pin on the MS harness connector. Id bet on it being the mosfet but you never know.
I don't see a snubber diode on the mosfet itself, just on the gate drive to it, so I would strongly suggest putting one across each injector. I am not sure a 1n581x series can handle the current now that I think about it, maybe a 1N5801 rectifier. 4+ amp capable schottky rectifiers are expensive and sorta hard to find. 1n5801 series rectifiers on the other hand are like 5 bucks for 4 at radio shack.
Edit: oh I see, the circuit to the left of the mosfet is the snubber and active clamp. Nifty.
Looks like they are actually using the chip properly, to drive the gate of that irfiz34n n channel mosfet. You probably popped that by miswiring it.
Try replacing the mosfet first. If you want to diagnose it, just use an oscilloscope to follow the signal from the input of the ixdi404pi all the way to the injector drive output pin on the MS harness connector. Id bet on it being the mosfet but you never know.
I don't see a snubber diode on the mosfet itself, just on the gate drive to it, so I would strongly suggest putting one across each injector. I am not sure a 1n581x series can handle the current now that I think about it, maybe a 1N5801 rectifier. 4+ amp capable schottky rectifiers are expensive and sorta hard to find. 1n5801 series rectifiers on the other hand are like 5 bucks for 4 at radio shack.
Edit: oh I see, the circuit to the left of the mosfet is the snubber and active clamp. Nifty.
Last edited:
squashman702
NAXJA Forum User
- Location
- Brighton, MA
MoparManiac
NAXJA Forum User
- Location
- Amherst, NH
Re: THe NAC Lots-O-Post Thread
AKA follow their instructions and I should be good.
AKA follow their instructions and I should be good.
- Location
- Rainy side of Washington
Re: THe NAC Lots-O-Post Thread
yup. Lots of words for nothing :dunce:
That IRFIZ34N is available on digikey for $1.68ea, if you are going to make a habit of popping them by miswiring things I suggest buying a rail of 25 for $23 after discount :spin1:
yup. Lots of words for nothing :dunce:
That IRFIZ34N is available on digikey for $1.68ea, if you are going to make a habit of popping them by miswiring things I suggest buying a rail of 25 for $23 after discount :spin1:
MoparManiac
NAXJA Forum User
- Location
- Amherst, NH
Re: THe NAC Lots-O-Post Thread
I'll buy more than one mostly because I'll probably tweak the pins off.
I'll buy more than one mostly because I'll probably tweak the pins off.
Begster
NAXJA Forum User
- Location
- Cape Cod/Boston, Mass
Re: THe NAC Lots-O-Post Thread
Eh, not that much, I only come on here every once and a while.
Ya, that was a great day. Fun trip both to and from the trail, as well as on the trail. The Pike was a deathtrap that day, almost got mauled by a bus. All the drifting we did on the way to the trail was pretty sweet. Too bad things aint like they used to be.
That was the northern NAC's "Big Bang."
Ya snow wheeling is great. Unfortunate I don't have a Jeep anymore so I can't do any.
Eh, not that much, I only come on here every once and a while.
Ya, that was a great day. Fun trip both to and from the trail, as well as on the trail. The Pike was a deathtrap that day, almost got mauled by a bus. All the drifting we did on the way to the trail was pretty sweet. Too bad things aint like they used to be.
That was the northern NAC's "Big Bang."
Ya snow wheeling is great. Unfortunate I don't have a Jeep anymore so I can't do any.
MoparManiac
NAXJA Forum User
- Location
- Amherst, NH
Re: THe NAC Lots-O-Post Thread
Who wants a blast from the past?
Who wants a blast from the past?
sheepjeep
NAXJA Forum User
- Location
- Boston, MA
Re: THe NAC Lots-O-Post Thread
pat loves my nuts
pat loves my nuts
squashman702
NAXJA Forum User
- Location
- Brighton, MA
Re: THe NAC Lots-O-Post Thread
Mmmm talk nerdy to me Kenneth. You're putting me at 45 degrees.
Mmmm talk nerdy to me Kenneth. You're putting me at 45 degrees.
ktm racer 419
NAXJA Forum User
- Location
- ROW DIALIN
Re: THe NAC Lots-O-Post Thread
Did you guys know you can run 6.17 gears in a high pinion dana 30? And it will hold up to 53" boggers?
Did you guys know you can run 6.17 gears in a high pinion dana 30? And it will hold up to 53" boggers?
- Location
- Rainy side of Washington
Re: THe NAC Lots-O-Post Thread
maybe with a samurai on top of it.
maybe with a samurai on top of it.
sheepjeep
NAXJA Forum User
- Location
- Boston, MA
Re: THe NAC Lots-O-Post Thread
just found out that the bar down by my apartment on mondays has $7 all you can eat wings. its not a shitty dive bar so i bet they will be on par or better than the 99's wings
just found out that the bar down by my apartment on mondays has $7 all you can eat wings. its not a shitty dive bar so i bet they will be on par or better than the 99's wings
MoparManiac
NAXJA Forum User
- Location
- Amherst, NH
Re: THe NAC Lots-O-Post Thread
Cooked the DB37 on the harness side as well as the board side. That MOSFET driver seems cooked, and didn't have a chance to check out the transistors but I'll do that Friday or something.
Good job retard.
Cooked the DB37 on the harness side as well as the board side. That MOSFET driver seems cooked, and didn't have a chance to check out the transistors but I'll do that Friday or something.
Good job retard.
foxwar71
NAXJA Forum User
- Location
- Foxboro, MA
Re: THe NAC Lots-O-Post Thread
Best carnage on the MJ yet :thumbup:
Best carnage on the MJ yet :thumbup:
- Location
- Rainy side of Washington
Re: THe NAC Lots-O-Post Thread
Wow, that blows.
If you can get me PCB artwork (or a good high res section of that section of the board before it burnt) and the parts I guarantee I can fix that for you.
Wow, that blows.
If you can get me PCB artwork (or a good high res section of that section of the board before it burnt) and the parts I guarantee I can fix that for you.
MoparManiac
NAXJA Forum User
- Location
- Amherst, NH
Re: THe NAC Lots-O-Post Thread
I could probably just solder a wire to the DB37 pin instead of using the conductor on the board where it burnt (looks like it was just the one conductor for the injectors) and clean it up. Just replace the driver and possibly transistors and it should be good?
Worst case is just send it back as warranty at this point, if they'll even take it.
I could probably just solder a wire to the DB37 pin instead of using the conductor on the board where it burnt (looks like it was just the one conductor for the injectors) and clean it up. Just replace the driver and possibly transistors and it should be good?
Worst case is just send it back as warranty at this point, if they'll even take it.
sheepjeep
NAXJA Forum User
- Location
- Boston, MA
Re: THe NAC Lots-O-Post Thread
Replace the melted parts sand off the solder mask and solder some jumpers
Replace the melted parts sand off the solder mask and solder some jumpers
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