Has any or does anybody own or ever seen a syma S107 like this one??

It's not a R3 or R5 and the markings on it are different, they go from left to right, one blank soldering joint then a "B+" (continuity in both) then "F", "B", "UP", "D" then  a blank which is the battery- (NEG). It has the numbers JLDZ-17A on the bottom but I googled it and it comes up with zip, not even one. Other than that there are no numbers on it and I can't figure out how to wire it, i've tried a few variations that one would think were obvios but to no avail, I know one of you geniuses out there can help a brother out, lol, Sincerely angpal59

Comments

[angpal59]

I mean it's marked, "F", "B" and "UP" and "D" which one would assume means front and back motor , and "D" is for down but it doesn't make sense. Isn't "F" front motor and "B" back motor, but that operates up and down, lol, I just don't get it.

[Burf]

F = Forward
B = Backward

[angpal59]

I had figured on that but I soldered everything according but to no avail. do I pile all the negatives on one post?

[iceng]

You can,  but it is not advisable because the PCB .traces are finite size..
 
But Recall ! !

It was Pointed Out  to you ^by _me that

"The silk screen dash ring flats on your PCB are all wired to minus yellow"

I don't believe you bothered to engage your _mind.........

[angpal59]

Now all you have to do is tell me how to fix the toilet bowl effect? What usually causes that?, I have replaced flybars before and that did it, but other times it didn't I think they're are a few different cause for it.I look at the shaft as it spins and I can't see a wobble so it doesn't look bent. What bums me out is I got it going and it used to be my favorite S107 of all time cause of the way it would hover so still and was just so smooth and now I lost that, I've had this one for the longest, I would have to say it's at least 3 years old.

[angpal59]

yes, all the negatives had continuity but I couldn't trace the positives.

[iceng]

Of course they are individually controlled semiconductor switches responding to your hand controller !!!!!!!!!!

[angpal59]

Well, I finally figured it out, the hard part is figuring out the wires,which is pos and which is neg cause my motors have white and black wires. But now I have the toilet bowl effect which it never had, what causes that with a simple S107? Man oh man, if it's not one thing it's another,lol

[iceng]

What else are you wiring to that blurry HD PCB ?

A

[angpal59]

Hi iceng, I have a question, is the swash plate supposed to be tight around the shaft with a bearing or loose so it has play?

[angpal59]

Nothing but the front and back and tail motors, thats all, because I had done so many before, I was confident that this one would be no problem, but the markings aren't the usuall ones. Also I tried doing the most common sense of wiring but that didn't work. That's why I need help

[angpal59]

cause look at this one, could this cause it to act like it does, mine doesn't have that swivel bearing in it.

[iceng]

Sorry, Double_E is my training.

[iceng]

Examining the PCB to as best I can..

• Assuming battery +Red -Yellow are proper colors.
• The silk screen dash ring flats on your PCB are all wired to minus yellow..
• This suggest the motor negative lines are to go to the top of each circle as the appear in you photo orientation.
• The motor positive lines to the lower attach pad.
• An LED in series with a 1K resistor will let you test your system to see which control doe what.

Hope this may be helpful for you..

[angpal59]

I will let you know and thanks so much for taking the time to help me out. Not many people would.