[Solved] Determine the value of the missing components

[FatMexican]

Any ideas on how to determine the value of the missing components values without removing the other components form a different section (the PCB has four identical sections that control motors.


FatMexican

[wraper]

It's obvious that PCB has exactly the same components mirrored on opposite sides (4 copies of the same circuit). Desolder and measure.

[MathWizard]

Have you looked up any of the chip's? You might find some datasheet with example circuits, that are the same or similar to your's.

Where are the missing components, what happened ?

[FatMexican]

I Email the manufacturer waiting for the replay; hoping to avoid more disordering if possible.

 

[fzabkar]

Could the EEW part be a dual MOSFET?

https://www.vishay.com/docs/64832/sia517dj.pdf

[FatMexican]

I was removing some connectors and was careless.

[FatMexican]

Could the EEW part be a dual MOSFET?

https://www.vishay.com/docs/64832/sia517dj.pdf

The missing components are capacitor and a resister.

[fzabkar]

Could the EEW part be a dual MOSFET?

https://www.vishay.com/docs/64832/sia517dj.pdf

The missing components are capacitor and a resister.

Yes, I know. I was thinking that tracing the circuit in that area could enlighten you as to the functions of these components. For example, gate resistors would be of the order of 100 ohms.

[FatMexican]

That is the website for the part

https://betafpv.com/products/f4-1s-5a-aio-brushless-flight-controller-elrs-2-4g


Thanks for all the help.

[wraper]

And what's the problem with desoldering 2 components when you need to solder the board anyway?

[FatMexican]

And what's the problem with desoldering 2 components when you need to solder the board anyway?

No problem I guess, just an academic exercise.

FatMexican

[FatMexican]

The manufacturer send me the correct values.