No Liveview - Broken component on Mainboard - Black covered piece (Crystal/ Quratz?)

[Max Alt]

Hello everyone

QUESTIONs:
What is the broken Part?
Where can I find the replacement part?

Context and background information:
Last year I crashed my P3P into a tree... My gimbal broke into pieces and I had to repair it.
The Drone works again, can fly, has a functional gimbal and can record Videos and take Images to the SD card.
BUT I have no live view (yes I tested different phones/ Ipads/ changed all the wires/ made every possible software up- or downgrade and so on).
After inspecting the gimbal mainboard, I discovered a little crushed component. During the crash the yaw Arm must have pressed against the mainboard causing the damage (as shown in the images blow).

What I know:
According to this dji forum post Gimbal mainboard damage it is a Quartz resonator which is most probably responsible for the coding of the (low res) 1080p transmission signal.
The Part is described as a "long, plastic covered metal part, 5 or 6 pins; quartz oscillator?" in this very detailed documentation of the gimbal mainboard (o-gs/dji-firmware-tools). I can only see 4 pins but I assume it is the same part.
I measured the length and width of the Part (approx. 7mm by 1.5mm) and found a couple of possible replacement parts but have no clue if the values are correct and which of the parts is the right one. https://mou.sr/2wVa8B9


If you have any advice or more information I would be happy to hear from you.

 

[quaddamage]

Yeah, I wonder what that part is.
Quartz osc is actually quite rudimentary component - there's just a miniature a tuning-fork inside, made of quartz crystal. So if it is damaged, you may try to just open it and look inside.
I was searching for this part in the past, but wasn't able to identify it as well.

This is definitely not the usual cause of no live feed. I would treat the relation to long part as uncertain. To make sure this part isn't used for something else, you could de-solder it, and check whether everything other that live feed still works.

Here is the usual diagnosis of no live feed:

Fix no video feed / black screen / no image transmission / no FPV on Ph3 Pro

Here you will find the diagram for diagnosing and fixing the most popular issue with Phantom 3 Professional. The solution will also work fine for Ph3 Advanced (though some branches are unreachable on this platform). Latest version is hosted here...

phantompilots.com

Note that just below the crushed part, there's NAND chip for DaVinci (the one with sticker). It is a delicate part, and might stop working without visible damage.

 

[Max Alt]

Yeah, I wonder what that part is.
Quartz osc is actually quite rudimentary component - there's just a miniature a tuning-fork inside, made of quartz crystal. So if it is damaged, you may try to just open it and look inside.
I was searching for this part in the past, but wasn't able to identify it as well.

This is definitely not the usual cause of no live feed. I would treat the relation to long part as uncertain. To make sure this part isn't used for something else, you could de-solder it, and check whether everything other that live feed still works.

Here is the usual diagnosis of no live feed:

Fix no video feed / black screen / no image transmission / no FPV on Ph3 Pro

Here you will find the diagram for diagnosing and fixing the most popular issue with Phantom 3 Professional. The solution will also work fine for Ph3 Advanced (though some branches are unreachable on this platform). Latest version is hosted here...

phantompilots.com

Note that just below the crushed part, there's NAND chip for DaVinci (the one with sticker). It is a delicate part, and might stop working without visible damage.

Hello quaddamage
thank you for your qick reply. I followed the steps given in your diagam but sill cant fix it.
I followed the diagram to the point at which I had to identify the broken component in the update log txt file.
Sadly I wasn't able to identify anny errors, maybe you could have a look.

(The cable between the gimbal and the OFDM Module got already replaced)

 [00037305]Delete history success.

[00037710]========== 2018.07.27 12:17:52. boot(2) ============
[00037825]Packet [C:\P3X_FW_V01.11.0020.bin] detected, card sn [0xb1620ad3].
[00037942]Packet upgrade start...

[00038058]Packet checking...
[00038171]Packet vlink 01.11.0020 <-> 01.11.0020.
[00038276]Record vlink 01.11.0020 <-> 01.11.0020 (flow = 0).
[00038397]Done.

[00038505]Version checking[1]...
[00012799]========== remo-con disconnect. boot(15) ============
[00012920]Packet [C:\P3X_FW_V01.11.0020.bin] detected, card sn [0xb1620ad3].
[00013039]Packet upgrade start...

[00013151]Packet checking...
[00013246]Packet vlink 01.11.0020 <-> 01.11.0020.
[00013345]Record vlink 01.11.0020 <-> 01.11.0020 (flow = 0).
[00013443]Done.

[00013543]Version checking[1]...
[00013671][03 06][00] v2.4.20.50 -> v2.4.20.50
[00013791][03 05][00] v34.2.0.9 -> v34.2.0.9
[00013892][04 00][00] v1.48.0.0 -> v1.48.0.0
[00014071][11 00][00] v1.8.0.0 -> v1.8.0.0
[00014255][11 01][00] v1.8.0.0 -> v2.0.0.33, firmware v1.8.0.0 not support.
[00014400][11 01][00] v1.8.0.0 -> v2.0.0.33
[00014544][12 00][00] v1.12.0.0 -> v1.12.0.0
[00014679][12 01][00] v1.12.0.0 -> v1.12.0.0
[00014835][12 02][00] v1.12.0.0 -> v1.12.0.0
[00014990][12 03][00] v1.12.0.0 -> v1.12.0.0
[00015181][15 00][00] v1.1.2.0 -> v1.1.2.0
[00015320][17 00][00] v1.1.1.7 -> v1.1.1.7
[00015505][17 01][00] v1.0.2.7 -> v1.0.2.7
[00015621][19 00][00] v1.0.8.96 -> v1.0.8.96
[00015715][01 00][00] v1.32.5432 -> v1.32.5432
[00015821][01 01][00] v1.32.5432 -> v1.32.5432
[00015926][08 00][00] v0.13.0.7 -> v0.13.0.7
[00016062][09 00][00] v4.1.0.0 -> v4.1.0.0
[00016166]Packet upgrade cancelled at version checking.



[00014818]========== remo-con disconnect. boot(15) ============
[00014922]Packet [C:\P3X_FW_V01.08.0080.bin] detected, card sn [0xe14e3c65].
[00015030]Packet upgrade start...

[00015137]Packet checking...
[00015240]Packet vlink 01.08.0080 <-> 01.07.0060.
[00015341]Record vlink 01.11.0020 <-> 01.11.0020 (flow = 6).
[00015593]Packet upgrade failed at packet checking.

Thank you

 

[quaddamage]

Sadly I wasn't able to identify anny errors, maybe you could have a look.

I see no issues, though I'm not really sure whether the info about module versions is recent..
After seeing your logs, I have a suspicion that putting too old firmware does not cause modules versions listing.
That would mean a mistake in the diagnosis graph.

Could you please try putting file with your current firmware (P3X_FW_V01.11.0020.bin) on the card?
Then paste the log again.

 

[jiminyfixit]

Hello everyone

QUESTIONs:
What is the broken Part?
Where can I find the replacement part?

Context and background information:
Last year I crashed my P3P into a tree... My gimbal broke into pieces and I had to repair it.
The Drone works again, can fly, has a functional gimbal and can record Videos and take Images to the SD card.
BUT I have no live view (yes I tested different phones/ Ipads/ changed all the wires/ made every possible software up- or downgrade and so on).
After inspecting the gimbal mainboard, I discovered a little crushed component. During the crash the yaw Arm must have pressed against the mainboard causing the damage (as shown in the images blow).

What I know:
According to this dji forum post Gimbal mainboard damage it is a Quartz resonator which is most probably responsible for the coding of the (low res) 1080p transmission signal.
The Part is described as a "long, plastic covered metal part, 5 or 6 pins; quartz oscillator?" in this very detailed documentation of the gimbal mainboard (o-gs/dji-firmware-tools). I can only see 4 pins but I assume it is the same part.
I measured the length and width of the Part (approx. 7mm by 1.5mm) and found a couple of possible replacement parts but have no clue if the values are correct and which of the parts is the right one. SMD/SMT 7 mm x 1.5 mm Quarze | Mouser Deutschland


If you have any advice or more information I would be happy to hear from you.

I have approximately a dozen main boards with this component damaged just like your photo. I believe it is a vital component in the video circuitry and I have tried several times, (unsuccessfully), to replace it. It gets damaged in a crash when the yaw arm smashes into the plate/cover just above this component. It is "hooked" into the circuit board and difficult to see past the solder. I could never get it loose, even with solder removed. I know you didn't want to hear this, but.... When someone finds a way to replace it, I will be next in line, so I can restore these boards.

 

[quaddamage]

Maybe?

MC-146 | Crystal Unit | Product | Epson crystal device

Information about kHz range Crystal unit of Epson Devices/MC-146

www5.epsondevice.com

Dimensions match, general look matches, just no idea how to decode symbols at top.

EDIT: Yes, that's either MC-146 or its knock-off.. Epson marks their crystals with 4 characters.
Here are all frequencies the original Epson devices can have:

Parametric Search

In this page, you can search the product from a parameter.

support.epson.biz