uConsole display flashes when connecting any USB-C cable

uConsole
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1

I’ve been dealing with this issue that whenever I bring my USB C cable in contact with the USB C plug on uConsole, when the metals touch, the screen would flash.
The device continues to work and flashing only lasts for the duration of “plugging-unplugging” phase. I’ve attached a video.

I suspect this is due to logic ground changing but would like a better opinion and tips to solve this.

For reference, this issue happens across different brands of power supply. I believe they’re good brands too (Ikea, Satechi, Apple). Could be something in my home power supply?
IMG_2303

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I see you have 26 views and no replies at this point. I hate when that happens, so I am replying. I just wish I could actually be more helpful.

I can see why this would concern you. I hope that you get a useful answer to what is going on here, and with luck, maybe even a fix.

Good luck.

2 Likes
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Have you reseated everything? The panel ribbon cable could be loose, check and reseat. Check and make sure the CM4 is fully seated in the adapter, with the adapter fully in the SODIMM connector.

You said different power supplies, did you also use separate cables?

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Thanks, yes I reseated and cleaned the contacts but no dice.

To give a bit more idea, this happens as soon as the two metal shields on the usb c cable and plug touch, so it really makes me wonder if interference is the culprit. However it doesn’t always happen (50% chance).

I’ve tried different cables, and also both USB A - USB C and USB C-C.

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My next attempt would be to use some copper tape to connect the metal parts of the screen to a ground pad to see if this still happens.

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I also noticed that this can happen sometimes with my uConsole as well, however in most cases that is jut only 1 flash - not so many as in your case.

Will be happy to know if your solution with additional ground worked out or not.

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Usually it indeed is once. But if I just play with the connector without actually plugging it. I elaborate: you just touch the outer metal (ground) housing together, none of the pins would make contact for another ~1-2mm. Then it happens often.

Anyway, yeah I’m waiting for a copper tape to try it, will post an update here.

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Recommend double checking this. Bring uC and charger to a coffee shop or something.