Bitcraze Forums

Hello,

I was told by a colleague of mine that there is a IC on the pcb of our Crazyflie 2.0 that needs to be replaced. When I plug in a battery to the quadrotor, everything heats up very quickly so I am assuming it is some kind of voltage/current regulator?

Anyways, the label on it reads A7RRXE, but I can't seem to find it anywhere online or in the documentation of the hardware. Have any of you had experiencing finding and replacing any parts on the pcb?

Thank you,
Jeremy

It is a 3.0V voltage regulator NCP702SN30T1G. I doubt that it is the regulator that is broken though as it can be something that has shorted that it powers and therefor gets hot. It powers the nRF51 and the PA on the top side of the PCB (U6 and U8 in the comp.placement pdf.) Look for any possible visible things and check the resistance if there is a short on the VCCNRF power.

Great, thank you for your reply! I'll take a look at those two and see if I see anything. When my colleague handed it to me, the IC he pointed to had black residue on it (I thought from blowing out) so I wiped it off too see the label associated with the IC. Is it not likely for the regulator to break?

As for the VCCNRF power, I think I found it in the schematic. Third page bottom left? It has three parallel capacitors going to ground and connected in parallel to pins 35, 36, 1, and 12?