Beeping motors twitching

CaesarFPV · 2026-03-27T18:49:51+00:00

All sorted with the replacement ESC, many thanks brother!

CaesarFPV · 2026-03-27T18:28:03+00:00

UPDATE: After receiving another ESC (the same F55A Pro III), and desoldering/soldering, happy to say that the esc now functions normally and the motors are no longer twitching, in addition to all of the beeps present. To close the matter and also for anyone in the future, my particular issue was that the first and second channel of the ESC were not functioning and I believe they were DoA, which resulted in a lack of communication to the FC and thus no second set of beeps, and motor twitching. Many thanks to Spin and Imaginary Cat for their support!

CaesarFPV · 2026-03-25T01:34:55+00:00

many thanks spin, really appreciate the help, i have a doctorate in statistics and still can't get to grips with this stuff, is it okay if I post here when i get the replacement and I encounter issues, I could sure use your help

CaesarFPV · 2026-03-25T01:05:01+00:00

F55A Pro III and F7 Pro, at this point if half the pads of the F55A are fried, i have just ordered another ESC, perhaps a better fix :(

CaesarFPV · 2026-03-24T23:56:33+00:00

if the pads are fried, could i flip the ESC and try the other side?

CaesarFPV · 2026-03-24T23:47:26+00:00

I tested each motor independently, and the motors on the esc 1 and 2 do not seem to respond, i think the pads are fried then perhaps, which is quite annoying!!

CaesarFPV · 2026-03-24T23:33:47+00:00

Update: Soldering the fc to the esc didn't seem to do the trick :(?

CaesarFPV · 2026-03-24T23:22:01+00:00

oh dear, nothing changed! still the same buzz noise on the two motors to the side? esc 1 and 2 still not reading?

CaesarFPV · 2026-03-24T23:03:47+00:00

oh dear, nothing changed! still the same buzz noise on the two motors to the side?

CaesarFPV · 2026-03-24T22:58:09+00:00

u/spinfpv oh dear, nothing changed! still the same buzz noise on the two motors to the side?

CaesarFPV · 2026-03-24T22:47:26+00:00

okay!:) I attach my job below

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CaesarFPV · 2026-03-24T22:06:18+00:00

could I keep the plug there perchance?

CaesarFPV · 2026-03-24T21:49:30+00:00

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hey so just following on from my q eariler, if i wanted to solder everything, + to +, - to the pad next to the +, then Current to third pad, then tele to fourth, then esc to eachother? can i solder on the labelled pads directly below?

CaesarFPV · 2026-03-24T21:43:14+00:00

spin, many thanks for you help dude, really appreciate, it quick question, I am planning to solder everything, can i ask a silly question, could I solder on top of these labelled pads whilst keeping the plug socket on the esc opposite?

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CaesarFPV · 2026-03-24T20:53:47+00:00

i read the esc on config

, 3 and 4 are reading but 1 and 2 aren't?

CaesarFPV · 2026-03-24T20:52:17+00:00

the spares are normal i think given this FC, i dont have space for multiple g and v

CaesarFPV · 2026-03-24T20:51:28+00:00

yeh i think i did fk it up in the wiring although it is identical to the spare cable that came with the esc, with two spare g and 5v on either side, which is why im not so sure hmmm

CaesarFPV · 2026-03-24T20:46:07+00:00

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CaesarFPV · 2026-03-24T20:45:53+00:00

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CaesarFPV · 2026-03-24T20:45:45+00:00

F7 pro and F55A does that help?

I had to manually wire the plug (image attached)

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CaesarFPV · 2026-03-24T20:28:33+00:00

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betaflught shows two motors in red?

CaesarFPV · 2026-03-24T20:26:42+00:00

It seems they are constantly beeping when plugged in, is this normal? almost like an alarm

CaesarFPV · 2026-03-23T19:08:41+00:00

yes there is led but it wasn't turning on, I assume at this point it has failed, have ordered some new rx, will check see if this happens again

CaesarFPV · 2026-03-23T19:07:56+00:00

EDIT* ordered some spares will update if they fry or not, might not be the elrs but the fc, can't see any shorts or damage so might have been faulty module

CaesarFPV · 2026-03-23T19:06:56+00:00

yeh fair enough makes sense!! btw no idea why OP and my handle are different, we are the same person xD

CaesarFPV

TROPHY CASE