Fixing an "it's broken" car boot sale P3Adv, it turns out to be an "esc error" with 'hum'

[Deleted member 120647]

Very clean and cosmetically intact P3adv and controller etc.. Both turn on as per normal but the controller had a bluey green indicator LED which I though might be a an indication of a stuck or failed firmware updater. This proved correct, the firmware has been updated and it can now control a drone. However when a controller (working) and Go app are connected to the drone the motors will not start and an attempt to do so prompts an "esc error" notice in the Go app.

Aside from that and the point of this particular post is that I also feel a faint vibration from the drone, I suspect it would be audible as a hum but I am deaf so can't check.

Does anyone know what might be 'humming' ?
It's more from the central region of the drone than say the arms but I disconnected the gimbal assembly in case it was from one of the motors there and this had no effect.

 

[Nightwolf]

do the motors spin freely?

 

[Deleted member 120647]

The motors spin as freely as on my existing drone and any other working phantoms I have played with.

 

[quaddamage]

ESC error - use DatCon to figure out which ESC is damaged.

Humming - this is surprising.. in general, a coil is required to make any audible noise from a current, ie:
- gimbal motors, or the small fan at top of gimbal (you already wrote you disconnected these)
- main motors (ESCs may make them do any sound)
- ultrasound speaker at the bottom of the drone (it emits fast repeating tics, like p-p-p-p-p-p, but noone should be able to hear them)
- any other coil within the drone - ie. those used for DC-DC converters - can make noise, if something is damaged near it (though this is unlikely)

I'd say most likely the sound is due to damaged ESC making the sound with a motor.

 

[Deleted member 120647]

Ta, bear in mind I am deaf so can not tell if there is an audible, quiet noise. I mention hum because it feels to to my touch like something that would hum.
Re coils humming, is there a fan in the sensor unit?
Actually it's your posts in Professional - ESC status error I have been looking at, notably posts 36 & 38.
I have the DAT file for the last test and the output of Datcon but it seems I can not upload to this site the .wks file version of the ,csv nor the .csv itself
The only mention of "esc" that I can find in the .csv or .wks occur in several places in column EK, the 140th column e.g
"
0 [hardfault]:-----fault is null: addr(0x40024000).flag(0x23664b54)-----| 0 [hardfault]:-----fault is null: addr(0x400241a0).flag(0x60e19f11)-----|
0 [hardfault]:-----task info is null: addr(0x40024340).flag(0xbf5d000b)-----| 0 [hardfault]:-----trace info is null: addr(0x400244d0).flag(0xf3fa7703)-----|
0 [hardfault]:******************check last trace ******************| 0 [hardfault]:-----trace info is null: addr(0x40024790).flag(0x55df52e4)-----|
0 [hardfault]:-----wdg_time_info is null: addr(0x40024a50).flag(0x0e736a58)-----| 0 startup:4.53735||| 0 Board:"wm320v2"|
1 airport limit inited[2]| 1 compass calibration init!| 1 [LED] changed: test led when startup| 1 app connect changed:last(255) != current(0)|
1 assistant connect changed:last(255) != current(0)| 1 [FDI MAGN[1]] event:turn on| 1 [FDI GYRO[1]] event:turn on| 1 [FDI ACC[1]] event:turn on|
1 [FDI BARO[1]] event:turn on| 1 [FDI AHRS[1]]:turn on| 1 [FDI CTRL] event: turn on| 1 temp cali (0.000000.0.000000) 0 fw:4 4||| 1 temp cali 0 bw:0.000000 0.000000 0.000000 ba:0.000000 0.000000 0.000000||| 1 app temp cali (33.000000.65.000000) aa fw:6 6|||
1 app temp cali aa bw:0.000149 0.000289 0.000268 ba:-0.000357 0.000515 0.000198||| 4 [esc_is_stall] status changed: last(0xffffffff) != current(0x00000000)|
4 [esc_is_empty] status changed: last(0xffffffff) != current(0x00000000)
"

The above is all in one cell of the files

 

[quaddamage]

I have the DAT file for the last test and the output of Datcon but it seems I can not upload to this site the .wks file version of the ,csv nor the .csv itself
The only mention of "esc" that I can find in the .csv or .wks occur in several places in column EK, the 140th column e.g

Where to look exactly in DatCon is explained on the chart here:

Fix ESC Status Error on Ph3 Pro Ph3 Adv or Ph3 Std

Follow the steps to fix ESC Status Error on Phantom 3 aircraft. This will let you repair the drone by either replacing the damaged component or fix it on component level. Currently the diagram matches all: Ph3 Standard, Ph3 Professional and Ph3 Advanced. The diagram is oriented towards users...

phantompilots.com

 

[Deleted member 120647]

Great ta, can I delete the copy and paste of the 'cell' in #5?