M4v2 red LED solid, no other LEDs

[axelnied]

Hi All,

I was successfully testing the M4v2 (R26 was already removed).
After some successful testing only the red LED stayed on, and all other LEDs (yellow flimmer, blue flimmer, green blinking) turned off. I was not able to connect it to the QGCS anymore. Flashing was not possible (="Failed to start").

I was pretty careful not create any shorts. Board was power via a 5V UBEC on VUSB as instructed. When I now connect USB, only the red light would turn on...

How to I re-animate the board?

[axelnied]

I forgot to mention that I was not able to enter boot mode.
I an powering via an FTDI with 3.3V, but when holding the boot botton and then pressing the power button, the red light turns on, but nothing else (yellow and blue not dim).

[Mullet]

Have you tried powering the M4 with a Micro USB cable? not FTDI cable. It sounds like the board is not getting enough power to boot up.

[aBUGSworstnightmare]

[axelnied]

Unfortunately I do not have a 1S LiPo, that's why I used the 3.3V from the FTDI... 3.3V vs 3.6V should be okay!?

When connected I am able to turn the board on/off with the switch.
When initially connected to 3.3V and holding the BOOT button and then turning it on, it does not seem to get into boot mode.

Edit: added picture

[aBUGSworstnightmare]

[axelnied]

I am aware of the 4.5v on motor connection and 5.0v on VUSB. I was debugging Spektrum connection when the light went out. U.fl connected and making changes to the software. is it possible is somehow fried the processor?

[aBUGSworstnightmare]

[axelnied]

I followed your instructions to connect via the balancer... by "debugging" in meant trying to get it to work. sorry nothing -fancy- here in my end. I am a mechanical engineer, not software engineer

[aBUGSworstnightmare]