Main fuse blows - total black out

Squeaky back brake? Hard to control at 30mph/40kph?
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radziuk
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Main fuse blows - total black out

Post by radziuk » Wed Aug 14, 2013 11:39 pm

Hi everybody ,

First of all i need to say that im Polish and im sorry for any laungage mistakes in the text below - I decided to wrote on this forum becouse im totaly desparede . My KTM SMT 990 from 8 weeks is out of order :/ and nob cant repody can repair it - so i hope that maybe anybody had the similiar problem and may help me ....but first things first . KTM is 2011 black - 14000 km at ODO. The main problem is the 30A fuse . it keeps blowing out and it happens totaly random ..i mean sometimes when i hit the trotle 6000-7000 rps , sometimes when i just wanna to start engine... sometimes i even can't replaced it- becouse it just blows straight away ...but very very rare.. if im lucky im able to put fuse in to the start relay ( but sparks sparks sparks ) and then the engine can run hours but if i start to drive ... buuuuuum ! and 30 A fuse is out :/ my first idea was regulator and what i did is : 1)I have replaced the regulator 2)i have replaced starter relay...and nothing still the same ....so i think that most propably is some short-circuit somewhere beetwen cables ..but how it maybe possible in such a new bike and where start to look for it ?? maybe other ideas ....? summer in short and the WINTER IS COMMING :) :) ....sounds like Game of thrones :) Please help .....
BRGDS

RAD

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kevxtx
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Re: Main fuse blows - total black out

Post by kevxtx » Thu Aug 15, 2013 1:17 am

First question what aftermarked electrial items are fitted to your bike? Alarm, GPS ETC.

Remove the tank & start unplugging things related to that circuit, if eveything is unplugged & there is still a short then the loom is shorting to ground, connect one side of a loose head light bulb to battery + & the other side of the bulb to the removed fuse terminal the bulb should light up as the wire is shorted to ground, now move the loom around until the bulb starts to flicker or goes off that will be where the problem is in the loom .

LenFerguson
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Main fuse blows - total black out

Post by LenFerguson » Thu Aug 15, 2013 11:16 am

Good advice Kev. I like the idea of the globe.
Current stable: KTM1290SDR(14), KTM1190ADVENTURE(14), BMWS1000RR(12), KTM690R(12), Husky TE250(13)

Previously loved: KTM990SMT(11), WR450F(10), F800GS(09), KLR650(08), KTM450EXC(05) FJR1300(04), KTM200EXC(03), XR400(03), CBR1000F(90), XR600(88), KR1(86)

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kevxtx
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Re: Main fuse blows - total black out

Post by kevxtx » Thu Aug 15, 2013 11:53 am

Been using the bulb trick for many years now finding shorts, the bulb needs to be at least a 35W H/L bulb a 60w works best. Or you could use one of these http://www.youtube.com/watch?v=mNsD1pjUtMA

radziuk
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Re: Main fuse blows - total black out

Post by radziuk » Fri Aug 16, 2013 11:07 am

Thanks for fast reply :)

I do not have any addictional equipment on my bike - just orydinary power supply socked ( for GPS etc ) . Just one question about your advices - what is "loom" ?? - please explain guys .BRGDS

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