25-03-20, 10:41 AM
Some updates.
The add-on circuitry has finally arrived and been attached by Mike. Unfortunatelly it didn't work as expected. Most likely the defective parts on the main board interfere and prevent it to function properly. Seems they have to be removed first. As this is a quite delicate operation we concluded to stop here. For now he's living with a manual switch.
To share our learnings I've put all information into a pdf. Hopefully that gives others some help and guidance. Feedback is welcome. Excuse my english, it's not my first language.
The add-on circuitry has finally arrived and been attached by Mike. Unfortunatelly it didn't work as expected. Most likely the defective parts on the main board interfere and prevent it to function properly. Seems they have to be removed first. As this is a quite delicate operation we concluded to stop here. For now he's living with a manual switch.
To share our learnings I've put all information into a pdf. Hopefully that gives others some help and guidance. Feedback is welcome. Excuse my english, it's not my first language.