Repair the USB-C connection of the Raspberry Pi 4 and use it flexibly

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When the first Raspberry Pi 4 with USB-C connection for the power supply came out, most hobbyists weren’t very enthusiastic: An adapter was needed for the power supplies with micro-USB plugs that were previously used. Many existing USB-C power supplies and cables for smartphones, tablets and computers could not be connected either, because due to a faulty circuit on the Raspi, they did not supply any power with the original cables.

Focus: repairing

Focus on upcycling

The simplest solution for Raspi-4 owners is to use a “dumb” USB-C cable without SOP chips – fortunately, these are typically the cheap ones for less than 10 euros. Or you can buy a Raspi 4 from the new production series, which has been in stores since the end of February 2020. Unfortunately, neither the lettering nor the model name have changed, so that it is practically impossible to find out before buying whether a dealer or Raspis is delivering the first production series or whether he is already selling the updated model.

A look at the underside of the Raspberry Pi 4 reveals which board revision it is: If there is a transistor immediately next to the "MICRO" lettering on the microSD card slot (below), it is the new board revision 1.2 without USB-C bug.  In the old Raspi 4 (above) the transistor is still on the edge of the board.

A look at the underside of the Raspberry Pi 4 reveals which board revision is involved: Is there a transistor immediately next to the word

A look at the underside of the Raspberry Pi 4 reveals which board revision it is: If there is a transistor immediately next to the “MICRO” lettering on the microSD card slot (below), it is the new board revision 1.2 without USB-C bug. In the old Raspi 4 (above) the transistor is still on the edge of the board.

The most noticeable distinguishing feature is that a transistor was placed differently in the new production series. For comparison, the illustration shows a Raspberry Pi 4 from the old (above) and the new series (below). If the Raspi is currently in use, you can also simply use the command pinout or look in the file / sys / firmware / devicetree / base / model: If there is revision 1.1, then it is a model of the first production series, the current series has the revision number 1.2.

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