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I have a pi 3 model B+ and the official raspberry Pi PSU, and the official 7” touch screen. I’m running Raspbian with all the latest updates.
I have connected the display using a USB cable as documented on the raspberrypi.org site.
When I power up I get the underpowered lightning symbol.
What’s the right way to do this? Does using the jumper cables instead of the USB pass-through cable work more efficiently? Is there any other benefit to using them besides freeing up a port?
I've got the power supply connected to the Raspberry and a USB from one of the four ports connected to the display. No lightning bolts with that set-up.
Before getting the TV HAT I used the jumper wires from pin#4 (5V) and pin#6 (GND) to the display. The TV HAT doesn't have pass through pins, so I switched to the USB cable.
Try to use a power adapter that can deliver 5-5.8V DC with at least 3A of current. Official Pi adaptors do this without any hassle.
