High heat and current draw from photon

Hardware
1

My photon seems to be drawing a lot of power and getting quite hot. It’s plugged into a computer’s USB plug, at 4.97V drawing 0.37A. (1.8W)

It’s not connected to anything, just dangling off the USB cord. I have flashed it with the Tinker app with firmware 0.5.3.

It gets too hot to handle, and a temperature probe I have touching the bottom side of the PCB reads 66 Celsius (151 Fahrenheit) after running a few minutes.

It will occasionally reboot on its own, but is otherwise running normally.

Is this the expected operating current and temperature?

2

That’s not normal as far as I’m aware. Have you had it hooked up to something previously (that might have damaged it)?

3

The Photon should never be barely warmer than room temperature and consume about 0.08 A at 5V. Just file a Particle support ticket we can do some more troubleshooting and possibly get you a replacement.

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4

I contacted Particle support, and got a new Photon shipped to me. Great support and incredibly fast shipping.

I tried powering my old Photon using the 3.3V and GND pins, but the power draw was still just as high.

The new Photon I received uses less power and doesn’t get very hot. Out of the box, just provisioned and connected to Tinker, it uses 0.075A for 0.37W.

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