No touch after charge port replacement

We have done many Switch charge port repairs with no problems.
However on the last 2, they both lost touch. Cant figure out why? Everything else is working, including hdmi output and charging. It also reads games.
Any help would be appreciated.

Clean touch connector & cable
Try another gamecard module if cleaning & reseating doesn’t fix it

Could also be esd damage from touching the board

Already tried that. We have a spare working unit to test with.

Hmm i would like to have such an board to find the issue but live in germany :expressionless:

You could check how the controller chip acts on a working board and what it does on a broken one but for that you would need an oscilloscope

If the boards have the rcm bug you could load up hekate and check if the touchscreen gets detected iirc