Did I burn up my NANO--VIN power

Hardware Nano Family Classic Nano
1

I purchased my Nano a few months ago from Arduino, so it's not a clone. I have it on my breadboard, and I was working on a project and testing some voltages, and all of a sudden all of the LED's on the Nano board flashed, and now nothing happens. It was powered by a 9V power supply at the VIN post. I removed it from the board and connected the power directly to the VIN and no response, and also no response from USB power source.

So is it toast, or is there a way to fix it? Thanks.

2

Sounds like toast, unfortunately. I NEVER use VIN when developing, sometimes not even for production, I prefer 12V to BUCK to LDR to USB 5V, but then I am old fashioned and don't like to put voltages on naked pins if there is another way.

3

let see your toased piece, both sides

4

Was it also connected to your computer via USB?

5

Attached are images of both sides of the Nano.
It was not also powered at the USB.

I put a meter across the diode and its Open, so it must be blown.

Also, I checked continuity between the GND pin on one side of the board, and the GND, VIN and 5V pins on the other side. There is continuity between all of them. Sounds to me like a short.

Need to replace or jump the Diode?

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IMG_5171
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6

I just checked the continuity among all the pins on the LM11171MPX Linear Voltage Regulator, and there is continuity among all of them.

Does it sound like this is blown, and is the bad part? Would that be the reason that there's no power to the circuit whether the power source is USB or VIN?

7

Can't see how the diode would have burned out if it was powered by Vin.
The diode does nothing while powered by Vin so it should not matter if it's shorted or open. However, don't connect anything to the USB with something also connected to Vin.

8

Jim-maybe the diode is fine and its the LVR that got fried?

9

That would make more sense.
If you connect 9V to Vin you should see 5V on the 5V pin.
If not, I would say the requlator is dead.

10

I had just checked that an NOTHING on 5V pin. While connected I heard a faint "click" sound, and then smelled "burning". So something went up in "flames". I'll just order a new NANO. I doubt this is a warranty issue.

11

Good idea. Hey, just in time, they are on sale!