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SuicidalSnowman
2006.08.16, 10:58 AM
could someone people give me some information on how to fix the circuit board?

while i was running the ol, it stopped, i tried turning on/ off, it still does not solve the problem, my guess was that the circuit board got burnt because nothing works and i just got a new moter and just got the steering fixed. so i went to my local hobby shops and checked, people there said that it has a big chance that the circuit board is burnt, and they recommend me to buy a new board that cost $700 HK, ofcause i won't buy it until i have no choice. i've got few people that are willing to fix it for me free of charge but then its too troublesome for me to go look for them. i was just wondering if it is possible for me to fix by myself. if yes, then how?

i would appreciate it if someone would help :)

SuperFly
2006.08.16, 05:08 PM
If nothing at all works, I would think it's a battery/power problem. Usually when a board goes, it's fried fets (in which case your steering would still work normally) or the antenna shorts (and everything still works, but your range is only about 6 inches). Boards don't usually just fry completely and have no function at all.

Double check your battery contacts and the wires going from the batteries to the board.

SuicidalSnowman
2006.08.17, 12:55 PM
If nothing at all works, I would think it's a battery/power problem. Usually when a board goes, it's fried fets (in which case your steering would still work normally) or the antenna shorts (and everything still works, but your range is only about 6 inches). Boards don't usually just fry completely and have no function at all.

Double check your battery contacts and the wires going from the batteries to the board.



the steering did work before i opened up the whole thing, like the this burnt and then i tried steering , and it works, then i opened up to see if any cable is loose, but then every cable is in place but then the cylinder object in the back of the circuit borad became black, so thats how i know it was burnt, so is it possible to fix the burnt circuit borad?

traxxasman215
2006.08.17, 10:01 PM
Looks like you fried your fets. What motor were you running?

And here's some questions to ask yourself before you replace them...
Are you any good at soldering? Do you feel comfortable soldering on such small pieces?

SuicidalSnowman
2006.08.18, 01:02 AM
Looks like you fried your fets. What motor were you running?

And here's some questions to ask yourself before you replace them...
Are you any good at soldering? Do you feel comfortable soldering on such small pieces?

i've tried solderring, im not good at it lol, how can i tell what moter i am having? coz like the hobby store just told me to put the moter they gave me, so like now im going to give the circuit to my frd, coz he is good at those stuff, and he will fix or replace them for me. so was the cause of the burnt on the circuit because of the moter?

traxxasman215
2006.08.18, 01:16 PM
Is there any way that you can take a picture of the motor? Also check to make sure your friend really knows what he is doing. I mean if he messes up, a new board is $60. I suggest you either have the shop do it for you with the fet service or I can do it for you. If you can get good proof that your friend is good with electronics and he knows what he is doing, then go for it.

Also, can you take a picture of both sides of the board?

SuicidalSnowman
2006.08.19, 05:30 AM
Is there any way that you can take a picture of the motor? Also check to make sure your friend really knows what he is doing. I mean if he messes up, a new board is $60. I suggest you either have the shop do it for you with the fet service or I can do it for you. If you can get good proof that your friend is good with electronics and he knows what he is doing, then go for it.

Also, can you take a picture of both sides of the board?

the board
http://i98.photobucket.com/albums/l278/kam__5/P1000275.jpg
board
http://i98.photobucket.com/albums/l278/kam__5/P1000276.jpg
moter
http://i98.photobucket.com/albums/l278/kam__5/P1000287.jpg
moter
http://i98.photobucket.com/albums/l278/kam__5/P1000282.jpg

my friend has like a elelctronics store, he knows how to fix it, i think but still if u have more exoperience then if you could be kind enough to help me fix it
above are the pictures. those label were for my friend.

i've checked the price on those board, its god damn $100, like $700 Hong Kong dollars, i don't really want to pay that much for it lol

SuicidalSnowman
2006.08.19, 06:02 AM
the front side


http://i98.photobucket.com/albums/l278/kam__5/P1000267.jpg

Newbster
2006.08.19, 03:38 PM
Nice pictures :D

If the "burnt" area is the little brown spot on the fets (near your thumb in the second picture) than it is a simple fix, swapping in new fets should solve the problem for you, and if your friend has an elox store he should be semi decent at soldering, so it should be no problem for you =D

traxxasman215
2006.08.21, 10:50 AM
The fets near his thumb are the steering fets. They are not fried since the car still turns.

I think your friend should be capable of doing it since he owns a electronics store. The problem is that you are in HK and I am in the US. Shipping is a pain.

SuicidalSnowman
2006.08.21, 01:21 PM
The fets near his thumb are the steering fets. They are not fried since the car still turns.

I think your friend should be capable of doing it since he owns a electronics store. The problem is that you are in HK and I am in the US. Shipping is a pain.

yeah, shipping will make me cry lol, my friend should be able to fix it this sunday, since he is on vacation, thanks anyway,

do you think the problem was caused by the moter?

LBRC
2006.08.21, 03:37 PM
From the photo’s I can think of a couple of things, first the motor has been tampered with in the attached enhanced photo note the bungled overheated soldering job connecting the capacitors to the case, and then note that the capacitors are configured for an AWD. To test the motor all you have to doe is connect it to a single charged battery as long as it turns and doesn’t get too hot it's ok. The motor problem I see is that I can’t quite picture how it fit in an Overland motor mount at all since the capacitors would interfere with correct mounting of the motor mount.

The second photo shows what is likely the problem; see the pinched ground wire, shorting the ground wire to a motor tab is definitely a bad thing and will cause everything you are describing.

SuicidalSnowman
2006.08.23, 09:49 AM
From the photo’s I can think of a couple of things, first the motor has been tampered with in the attached enhanced photo note the bungled overheated soldering job connecting the capacitors to the case, and then note that the capacitors are configured for an AWD. To test the motor all you have to doe is connect it to a single charged battery as long as it turns and doesn’t get too hot it's ok. The motor problem I see is that I can’t quite picture how it fit in an Overland motor mount at all since the capacitors would interfere with correct mounting of the motor mount.

The second photo shows what is likely the problem; see the pinched ground wire, shorting the ground wire to a motor tab is definitely a bad thing and will cause everything you are describing.

thank you guys, for the lots and lots of info that you guys have given me,

Appreciated