sudomod

Finally I found time to work on my GBZ-project. I got the SAIO (v0.6c) and all seemed to be going well, except that the buttons do not seem to respond.

- Test mode shows everything okay (except USB WIFI)
- Retropie indicates "1 gamepad detected"
- If I simultaneously hold the X&Y button, I hear a gently plopping over the speaker.

Who had any idea of where to look, what to try?

By now I have figured out (by systematically testing GND with MODE) that the MODE pin (from the connector to the small PCB) is grounded. Somewhere there must be a shortcircuit. I have no idea how to determine where, though.

To get to this conclusion, I used my multimeter to measure resistance, and found that there is none (starting at the mode-button, working my way back to the main PCB).