After a crash, I lost video and then tried to connect it to the BF to see what happened and by default the FC goes to the DFU mode. When I exit the DFU mode it works fine, I have video and all is ok. But when I unplug and plug again the USB I have the same issue, it goes again to DFU mode.

Any ideas if I can fix this? or I need new FC?

Check your boot button to see if you have a short (permanent close circuit). Use a DMM on continuity mode to check.

(25-Jan-2021, 09:22 PM)voodoo614 Wrote: Check your boot button to see if you have a short (permanent close circuit). Use a DMM on continuity mode to check.

Thanks for that, it looks is not shorted.

(26-Jan-2021, 06:00 PM)JohnBos Wrote: Thanks for that, it looks is not shorted.

You can't just look. You have to check it with a DMM (multimeter).

(27-Jan-2021, 02:15 AM)voodoo614 Wrote: You can't just look. You have to check it with a DMM (multimeter).

Yes, I used the multimeter but is not shorted. Only when I am pressing the switch is shorted which is normal.

Try to reflash with full chip erase. Remember to backup a dump file before you reflash.

Sorry for the delay in reply. A lot of time i do not get a notification.

(29-Jan-2021, 09:57 PM)voodoo614 Wrote: Try to reflash with full chip erase. Remember to backup a dump file before you reflash.

Sorry for the delay in reply. A lot of time i do not get a notification.

No probs, thanks for helping. Done, I updated the latest version and still has the same problem.

I am not sure what is the problem then.

(31-Jan-2021, 08:52 AM)voodoo614 Wrote: I am not sure what is the problem then.

I will change  FC, probably some of the electronics are off.
Thanks again for your help!

(31-Jan-2021, 09:26 AM)JohnBos Wrote: I will change  FC, probably some of the electronics are off.
Thanks again for your help!

I think I found the problem one diode was off, I'm waiting for a new one and I will let you know if it is fixed or not.

Good troubleshooting if you figured it out.

(01-Feb-2021, 04:34 PM)voodoo614 Wrote: Good troubleshooting if you figured it out.

I ordered the Diode Zener 3.9V 5% 500mW 2Pin SOD123 and hopefully will work. The rest of the components looks okay.
I will update tomorrow, just in case if anyone else has the same issue.

(01-Feb-2021, 06:28 PM)JohnBos Wrote: I ordered the Diode Zener 3.9V 5% 500mW 2Pin SOD123 and hopefully will work. The rest of the components looks okay.
I will update tomorrow, just in case if anyone else has the same issue.

And after I changed the diode, it worked. Wooohhoooo! It was one diode off next to the switch.

Good