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  #1  
Old 06-17-2008, 01:12 AM
Kaze Kaze is offline
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Exclamation Critical Advice Needed

I was working on one of my Xmods just now swapping chasis and EP's over from my painted lancer chasis to a new Gen 2 Chasis. During the process I soldered over the EP which has the following:

18Gauge Wire Upgrade
Spider V3.0
Power Switch bypass

Upon the transfer it's necessary to test that the transfer went well, so I pop my batteries in there and the moment I do i hear a small snap or crack and then see smoke come out of the chasis... I know i burnt something, but i'm not sure what.... I need advice on what i burnt so that I can replace it seeing how there's a new EP there too... Can someone confirm what I burnt and why this happened? (please don't let it be the spider.... also the batts were removed immediately I'm quick with stuff like that).

Thanks....
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Old 06-17-2008, 01:21 AM
2wdpancar 2wdpancar is offline
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You sure you didn't solder with the antenna or crystal in?
I think I fried 3 cars worth of range resistors from soldering with the crystals and antenna in(back when i was a noob).
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Old 06-18-2008, 04:55 PM
Kaze Kaze is offline
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Stole... i mean borrowed... my moms camera.... what do you guys think? I'm going to tape the wire shut and put some batteries in and see if I can accelerate.



From the looks of things, this wire was the culprit.



The steering FET seems to have been the victim (bottom left)




The top of the board (and Spider) seem fine, i guess? anyway I can troubleshoot?


*Put some batts in after wraping the stripped wire above, the car can Accelerate but smells like burnt plastic while the batt's in there.
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Old 06-24-2008, 10:52 PM
madcat303 madcat303 is offline
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the fet with white bubble on it is burnt
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  #5  
Old 06-25-2008, 12:30 PM
xmodificationer xmodificationer is offline
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who let madcat back?
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  #6  
Old 06-25-2008, 12:50 PM
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texan_idiot25 texan_idiot25 is offline
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Quote:
Originally Posted by xmodificationer View Post
who let madcat back?
A fair ban through points...

Quote:
Originally Posted by Kaze View Post
Stole... i mean borrowed... my moms camera.... what do you guys think? I'm going to tape the wire shut and put some batteries in and see if I can accelerate.



From the looks of things, this wire was the culprit.



The steering FET seems to have been the victim (bottom left)




The top of the board (and Spider) seem fine, i guess? anyway I can troubleshoot?


*Put some batts in after wraping the stripped wire above, the car can Accelerate but smells like burnt plastic while the batt's in there.
I'd fix that burnt FET before powering it up again. If it's smelling while your driving, I wouldn't risk more damage or fire from the FET going to hell.
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Old 06-25-2008, 04:40 PM
Kaze Kaze is offline
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No i know, I haven't decided on either transplanting onto a blue evo board and doing 20awg instead of 18awg, or just swaping a fet, cause i feel that swapping fets is hard, i was nervous enough with the spider install the first time around.
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  #8  
Old 06-25-2008, 05:05 PM
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XMDrifter XMDrifter is offline
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just a new board if your not comfortable doing a fet swap.
you can still use 18g, but 20g still seems reasonable in performance to me (hell, i've got 26g wires hooked to my 11.1v 1000mAh helicopter li-po, and i can't see the difference between that and my other 18g 11.1 1000mAh heli li-po)

edit: i think steering fets are kinda hard to find if you don't have extra boards
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