Order Number: 8702
Product Name: Geprc Taker F722 Bls 65a V2 Stack
Brand: GEPRC
MCU on flight controller is dead, tried cable to phone, cable to PC and no device can be found. drone wont arm, no OSD in goggles, and no MCU light on FC regardless of power source (battery or USB). all other rails are working, such as 3.3v, 5v, and 9v. attempted different ways of powering and entering UFI mode with no life.
Also swapped the flight controller out for a brand new one and the ESC seems a bit off too, with vibrations in normal flight on a regular tune and all else tight and checked.
Different power sources, reseating connectors, different cables, UFI mode, cleaning board, checking for hot spots/shorts (MCU is cold to touch), powering with no components connected.
Sorry to hear about this, could you please confirm that you checked the FC before soldering anything as per our general advice with new FC, reason being after soldering its a lot more tricky to get manufacturers to agree on replacements.
How do I test my new Flight Controller? (and why it’s important)
Thanks for getting back to me.
all was checked before-hand and was working well. nothing was changed in firmware, just configured UART ports and configuration, etc.
Was only soldered to later on because I lost a cable.
Hi,
Thanks for sending over the pictures.
Looking closely at the setup, the VTX connector appears to have melted or shorted. There is also some exposed wire on a few of the flight controller solder joints. Since the board flew successfully before stopping, it is highly likely that the VTX connection caused a short.
To see if the main processor (MCU) is still alive, please test it with a multimeter. You can find the steps for checking the 3.3V, 5V, and MCU here:
To see if the main processor (MCU) is still alive, could you please test it with a multimeter? You can find the steps for checking the 3.3V, 5V, and MCU here:
Let me know your readings so we can advise on the next steps. I want to be upfront: because the board has been soldered, flown, and shows physical signs of a shorted VTX, GEPRC is very unlikely to authorize a warranty replacement. However, let’s get those multimeter readings first so we know exactly what we are dealing with.