after installing and connecting the "Reveltronics" Oil pressure sensor (10 BAR) to the UTComp Pro using the 5V supply from B6, the Pressure seemed to be slightly low at Idle to me. First of all I wanted to figure out if the Voltage supply of the sensor is sufficient. Measured the Voltage output At B6 and it was about 4,8 V which might bi to low for the sensor?! As next step I was going to connect 12V for the sensor supply to see any difference in sensor reading.
This is where the problem occurred. Giving the sensor 12V I forgot to unpin the supply from B6, feeding in 12v to the 5V bar of the UTComp Pro. I heard the buzzer indicating me that I messed it up.
Now the display doesn't work properly like there is no backlight. The UTComp unit though is working, USB connection and all the sensor readings also the 5V supply works still with +4,8V at B6.
Any Idea what I might have broken the display or the control unit? The display lights up again if I repeat my failure connecting 12V to B6.