Troubleshooting

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The screen is not working correctly

Make sure to cut the trace on the shield next to CLK and run a wire over to A4. For more information, see Connecting Using RGB Matrix Shield and scroll down to the Metro M4 Usage section.

There is still a bunch of random pixels on the screen and it's unreadable

Try connecting power only or try a different ribbon cable.

The display keeps fading out or resetting.

Make sure you have enough external power going to the Metro M4 Express Airlift. The RGB Matrix requires a lot of power.

 Assembly

This guide was first published on Aug 21, 2019. It was last updated on Jan 26, 2022.

This page (Troubleshooting) was last updated on Jul 03, 2019.

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