Power issues with touchscreen

[fawked]

Image1864263424.jpg (53.48 KiB) Viewed 871 times

Like the topic says, I'm getting the dreaded lightning bolt after hooking up the official touchscreen. I have nothing the USB ports, but use a Bluetooth controller...I thought maybe it was the PSU, even though I hadn't experienced this before. Same problem. So I dug out my raspi1 and the official hub you could but, rated at 5.2v 3a.... Still getting the lightning bolt.any suggestions?
Thanks in advance

[DougieLawson]

Your power supply is lying or the USB-A to microUSB cable is not up to standard or the hub may be limiting the current to 500mA.

[davidcoton]

My B+ and touchscreen needs a dual PSU with separate cables. Each outlet rated 2.4A, though I don't think both are that heavily loaded. I could not get a single PSU (up to 2.4A) to work, even when the PSU works well with a Pi3.

[fawked]

My B+ and touchscreen needs a dual PSU with separate cables.

Just to make sure I'm understanding correctly, you used the micro USB ports on both, instead of gpio?

[davidcoton]

Yes, two microUSB cables to separate ports on a dual USB supply. No GPIO power connections.