Giga R1 WiFi 3.3V regulator dead

Official Hardware Mega GIGA R1 WiFi
1

I just got a new Arduino Giga R1 and the Arduino Giga Display and was trying out some very basic sketches (e.g. a bouncing ball). I reset the board and lost all the power to the board. It was plugged into a USB port (not external power) and I verified the USB port is working (and the cable).

I removed the Display and still nothing.

Then I measured voltages on the Giga R1. The 5V (from the USB) is good (~5.04V), but the 3.3V is around 0.5V. I suspect the 3.3V regulator is dead. Obviously I'll be contacting Arduino and filing a warranty claim as this was definitely NOT abuse or improper usage. I've had the thing for 3 days!

My question to the forum is this...

Should I be worried that the real culprit is the Giga Display? Could the display have somehow shorted the 3.3V supply and therefore killed the Giga R1 board? The Display is powered completely from the 3.3V supply from the Giga R1, so the concern seems valid.

I've have another Giga R1 which works like a champ which does NOT have a Giga Display. If I get another Giga R1 board and connect the Giga Display is it going to kill that one too?

How can I test the Giga Display to know if its got a problem without destroying another Giga R1?

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From the schematic diagram ( SCHEMATICS IN .PDF), you can see that the 5V output from DC converter "U7 AP63200WU-7" supply the regulator MP2322GQH whose output supply 3.3V to board and peripheral. So if you have 5V output, yet no 3.3V, then something (like wrong connection of the display or external circuit/sensor) damaged the regulator or sometimes component failure.

Note that connecting the display to the board as recommended below will never damage anything.

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Just connect the two correctly and follow this guide Getting Started with the GIGA Display Shield to test. If the issue repeats, then contact the Arduino Support team via Contact us
 with your purchase receipt.

Note: Before testing with a new Giga R1, make sure that you test the Giga Display's pins 3.3V, 5V, Vin with GND for short circuit. If there is a short circuit, do not connect the display to any other Giga board.

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