Typhoon H not booting up

[hemant]

When I press the power button, the blue light on the power button comes up. After I hear the beeps, the camera lights come on but not the lights on the back of the drone.

The drone powers off immediately when I leave the power button.

Can someone help?

 

[h-elsner]

This sounds like flight controller module is defect or not proper plugged in. Maybe the 5V to 3.3V converter on the flight controller board is dead. I think you need a hew flight controller board.



If you have chance to measure 5V pins and Vcc 3.3V you can see more.

 

[Stephen1988]

This sounds like flight controller module is defect or not proper plugged in. Maybe the 5V to 3.3V converter on the flight controller board is dead. I think you need a hew flight controller board.

View attachment 33433

If you have chance to measure 5V pins and Vcc 3.3V you can see more.

They can be bought from AliExpress. EBay might have one cheaper if it is faulty

 

[WTFDproject]

The images below show the failed mosfet that caused the same symptoms on a couple TH boards I've seen.
I'm pretty sure the "other" power supply channel on the TH mainboard only supplies the RealSense module. @h-elsner or someone else may be able to provide more reliable information. If the other power supply is not needed, that chain may be a source for a new mosfet.
Or you can order a new mosfet 5450 online.

10PCS New for 5450 TPS5450 TPS5450DDAR SOP-8 SMT Voltage Regulator Switch Chip New for Arrival 2025 High for Quality: Amazon.com: Industrial & Scientific

10PCS New for 5450 TPS5450 TPS5450DDAR SOP-8 SMT Voltage Regulator Switch Chip New for Arrival 2025 High for Quality: Amazon.com: Industrial & Scientific

www.amazon.com

 

[frasafer]

They can be bought from AliExpress. EBay might have one cheaper if it is faulty

Alliexpres, no, in EBay !

 

[Stephen1988]

Alliexpres, no, in EBay !

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