Fried My 9920!!!

[coolhandcountry]

Did you have one pack or two packs on the esc with the lvc?
Was the lvc wired with one lipo or two?

[jagboy]

I'm sorry to hear that man. I know how that feels. Are you sure the polarity was correct?


JB

[nbcaznmaster]

i dont think its the lisaver at all. I think its the lose wire on the ESC board. Wierd thing is taht the hitec connector, has a melted black part.

[sjcrss]

clean it up, and reconnect hte loose why...what do you have to loose.....just be real carefull is all

[nbcaznmaster]

I have only one pack at taht time. Heres the thing, i connected teh lipo to teh NON LVC pack side,and POOF! Should i have connected the LVC to the LISaver side?

[coolhandcountry]

Do you have a pic of how you had the lvc and lipo hooked up?
If you hooked it up a certain way. You did it.
If you hooked it up another it is another problem.

[nbcaznmaster]

here ya go, dont make much sense how it could fry when tehre is no complete circuit.

[BrianG]

If that's exactly how you had it wired, it looks like the LVC was "trying" to complete the circuit. Basically, the ESC was pulling current through the LVC instead of it being across a battery. This might have blown something and placed the pack voltage at the output of the ESCs BEC through the LVC's throttle line. Depending on the regulator, you could have gotten current flowing backwards through the BEC causing it to pull a lot of current.

[coolhandcountry]

Well now!
If my thinking is correct. The bec internal is hooked to the batteries ground or neg wire. With you hooking the lvc on that side. You accually shorterd the
battery out thru it. If you had hooked it on the other wire it would have been
better. It won't read a lvc on all the packs though. You completed the circuit
and fried the esc. The esc was completeing the circuit with the lvc.

The way i see it. You made a smoke boom with that wiring.

[Procharged5.0]

Originally Posted by Mark Fradkin

I WOULD HAVE BEEN BETTER OF JUST DRIVING MY TRUCK INTO THE OCEAN.
then only the electronics would be shot
I was ripping sand runs at the beach today when I SLAMMED into a unseen small concrete small devistating sorta hidden concrete block about 40 yards away. SEVERE IMPACT. 20 to 30 MPH EST
DAMAGE
New Era ext CHASSIS bent mid length
TRAXXAS SHIFT SERVO DESTROYED
EXPENSIVE STEERING SERVO DESTROYED
2 5S APACHEE PACKS / PUNCTURED
GORILLA STRAPS BOTH TORN
SCREWS SHIERED ONE GREAT ASSEMBLY FRONT BULK
QUARK 125B DOES NOT TURN ON
FIEGO 9XL BOTH ENDS CAME OFF BUT I think it will still work

CAN ANTONE--TOP THAT just GOT the car ripping too

You must post pictures! BTW sorry to hear about the wreck. It's a bummer!

[sjcrss]

I looked at your pics...and it looks like you got your 9920 rec wire plugged in wrong..going into the LVC....the brown wire is suppose to line up to the black on the lvc.....it looks like it is lined up to the white....( and yes you can plug it in wrong....cause i tried it myself)......if it is this would cause the lvc to send the wrong polarity thru the rx lead....

[nbcaznmaster]

i dont think i screwed up teh lvc to esc wiring, i took everything appart and placed them roughly together, so i could have overlooked that.

[nbcaznmaster]

Originally Posted by coolhandcountry

Well now!
If you had hooked it on the other wire it would have been
better.

wait, so it would WORK if i hooked it up that way!

[Serum]

No, with the Y adapter as shown here you can't make it work. the LVC is used as a connector to make the circuit closed. hook the LVC connector to the Y adapter on the controller, than put a close bridge on the other side of the connector that is over on the controller (DO NOT put a bridge onto the LVC device)

just hook up the batteries to the LVC and it should work the way it's meant to work.

[BrianG]

My BEC and Wiring Info page shows you how to wire an LVC. Just choose the right options...