Flight Controller won't power on with LiPo

AmIDigital

AmIDigital

Member
It will light up with USB. In the picture you will see it has 4.92 volt going to it? Is that close enough or should it be at least 5v?

Thanks
 

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What AIO board is that.?
Oh it's not. Just looks, because of the angle.
 
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You need to supply the board with 5v from the 5v bec on the pdb. If it has one.
Your esc's ere opto. So provide no power to the fcb.
 
So just solder 2 wire or use plugs in your case. on rail number 8 Black to the bottom & red middle then to your pdb 5v
& ground.
 
It is getting 5v from the PDB. You will see in my image above that there is 4.92 going to it.
I don't understand what you mean here. "Your esc's ere opto. So provide no power to the fcb."
 
IMG_20170512_213103203_HDR-1024x575-1024x575.jpg if you look close at pins 8 I have power attached to a 4cm wire to the pdb. Some esc's have a bec that provides 5v,
Yours don't. Because I have them.
All they do is send a signal through the white wire, the black is ground as normal.
I cannot see any power wires on the rail unless it's on 1-4. Are you sure it getting 5v from the pdb & not the USB.
 
Here is another pic. Is 4.9 close enough to 5? Still not powering on without USB.
 

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On the first picture the power was not on rail 8 but now it is,ok err going on experience you have fried it or can you open cleanflight with it.
If not you shorted it somewhere.
Had the same problem with naze32.
Led's will only light up with USB.
Means R. I. P..
did you test the board @ opening.
 
Board works fine with USB. It did work fine when I just installed it on the bench, then I took it outside to test and nothing since.

I tested the board by plugging it in with USB and it worked. Should I test another way?

Also just to be clear. If I connect 5v of power to the board on either that rail 8 or vbat, lights should be on right?
 
Yes. That's why I said about it in the first picture. If you can open cleanflight through USB then the board seems OK.
Can or did you calibrate the esc's
 
And now I've just noticed you have brass
Stand offs.. That's a bad idea. Not only for weight but they are very conductive.
That may be a or the problem.
 
I replaced the board and it is working. Getting plastic standoffs also. That could be what has been driving me nuts lately!
 
You must have shorted it.
Invest in a multi meter & always check b4 you apply any power..
Do a continuity test if it keeps beeping you need to find the short.
If no beep you are good to go.
 
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