A topic on the forum HERE back in 2021, launched a more in-depth investigation into weird STE video issues, namely when using the 1712 shifter. It would cause all sorts of crazy video issues as shown in the above images and THIS video. A later investigation into STE memory problems HERE was also linked to this same problem where if the STE has a 1712 shifter, it may malfunction in various ways whereas the original 588 shifter does not. THIS test board was created to alleviate the problem and later a more final board is now available to the public for testing.

Locate the track as shown in the above image, thencut the track and tin the bottom end with some solder. Verify under a magnifier that the track is cut.

Locate the via as shown with the arrow above, and solder a small length of solid tinned copper wire such as a old resistor leg etc

I suggest leaving a couple of centimetres protruding through the bottom of the board to help with heat dissipation with soldering later on.

Scrape away the solder resist as shown in the above image.

Place a layer of thick paper under the PCB to lift it slightly off the motherboard. This prevents the bottom of the PCB from shorting out anything on the motherboard. Additionally, this elevation aids in soldering other wires onto the PCB, ensuring they also do not touch the motherboard.

Place the wire you soldered into the motherboard into the top left hole in PCB as shown above and then solder. Then solder blob over the bottom of the PCB as also shown. Then trim the wire on the top and bottom of the motherboard.

Using some thin (white) wire, solder it to the capacitor as shown (this is the 5V supply) . It should be long enough to reach the fix board.

DO NOT be tempted to use the blue capacitor to the right or any other components as these are likely connected to the 12volts!

Make sure your paper is underneath the hole as shown above and solder the white wire as shown.

Verify under a magnifier that you have not shorted out anything else while soldering!

Solder to the track which you cut earlier as shown by the white wire to the fix PCB as illustrated with the red arrows and then remove your paper.

Doublecheck all your work and verify everything is soldered correctly and you have not shorted out anything while soldering! If all goes well hopefully your shifter problems will now be solved!

I also suggest using some small spots of superglue or raising to hold down the wires more securely.