Help with steering fets.

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[Russ]

Well after taking my OL apart I can see why things arent working. All of the wires were hanging on by just a strand or two to the board. When I opened it up I got confused on which pins need to be soldered together on the steering fets. If you look at this pic you can see the mess I have to fix. The previous owner soldered a big glob onto the outputs. It seems to me that only 3 of the pins should be soldered together. So what pins need to be soldered together?




This is a pic of a racer board I found, it appears that the outputs are soldered differently than mine.




Which is correct? They appear to be the same board.

[briankstan]

typically 3 of the 4 are soldered together.   and one pin is seperate.

looking at the board the 3 inside legs of each fet are soldered together (the 6 inside ones, 3 on each fet).   pop the lid on your F1 and you will see what I mean.

make sure the wires have good contact and you should be good to go.

[Russ]

So should I desolder the messed up part or should I leave it and just re-attach the wires?

[briankstan]

really you can just solder the wired back on,   the reason it was off and on was because the wires were disconnecting.

if you wan't to do it righ,  I'd clean it up some.   Just don't get the fets to hot.  you can ruin them.

[Russ]

Well what I did was desolder the mess on both fets. I actually did just the opposite of the bottom board figuring that the one middle fet on mine was correct. I made three of the pins connected on each fet. I left the inside pins of each left unsoldered. I tested it and it seemed to work just fine. I really wish I new more about the fets but I'm guessing that only three pins need to be connected so I went that way. Right or wrong I dont know, but hopefully it keeps working.

[Nic-z]

I've reasearched it a bit russ, and from what I gather, the factory just does three of the four, But Atomicmods do theirs and so do other shops with a big glob of solder on all four, so if the pros that get paid to do it use it with al four, and the people that make them do three I think you're good to go either way, its probably easier just to do all four I would think is why most do four.

[Ryan]

I looked at the steering fets on my F1 and the two middle ones were soldered together. They were not in huge globs like you have there but my F1 always works for me. Just more information.

[Russ]

I should have took some pictures of the finished result. It turned out nice. It looks clean and the wires are secure. Hopefully I wont have any more problems. The toughest part was getting the board put back into the chassis and the top plate to cover it. Especially since the rear shock tower is glued onto the chassis and not removeable. What a pain!! I'm still not sure I got all the wires routed good enough to not pinch in there somewhere. Anyway it seems to be working now and should be ready to go for next time. Thanks guys!!

[briankstan]

all 4 of the output legs can be soldered together without hurting a thing.

good to hear,   it's wasn't much fun being the only one to finishe the last race...

briankstan
Russ
Ryan
Chad
CLODGUY
wild child
benihanna80
trackstar

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