Leaderboard

Hi Niels, it's there in the Utility -> Options menu. Hi Pieter, You can try this thread for troubleshooting if you wish: http://midibox.org/forums/topic/20993-troubleshooting-midiphy-seq-v4/?page=1 The OLEDs are probably fine but I would still suspect the cable. A slightly crooked crimp can short two lines together. Common issues with a display not working are: J15_S not jumpered to 3.3V R33D value (should be 560R) Cable strands shorted together Cable makes contact with components on the OLED PCB (isolate with kapton tape) Cold joints or shorts on wCore 2x25 pin headers (trace back to pin names or even MCU pins according to http://ucapps.de/mbhp/mbhp_core_stm32f4.pdf) Best of luck!

Funny!

The good thing about the resistor networks is they aren't hugely sensitive to heat. CMOS chips on the other hand... I would also recommend a hot air station. I have something similar to what Bruno linked, but the fan is in the main box rather than the "nozzle". They're useful for other things too, like desoldering (or soldering) large metal parts like heatsinks, pin headers or jacks, or when the PCB designer doesn't use thermal isolation pads on parts attached to the 0V plane. I even made crème brûlée with it once!