Hello everyone, a bit of a last ditch effort on this one, but here we go:
I recently bought a Mindstorms NXT kit for almost nothing, but found that the screen is very low contrast and difficult to read. According to the googles, it's a common failure caused by three small surface mount caps on the screen/button PCB that often have cracked solder joints. I checked on them, and found that the smallest of the lot, C3, was already cracked clean in two.
So far, I've been unable to find the value. I did find the schematics, linked below, but they seem to not cover the button/LCD board.
I can't tell where the other side goes, but the other appears to go to pin 3 of the connector labeled J15, which would be VCC3V from the main board. I
think it's for setting the bias of the LCD, but I'm not sure.
Anybody have ideas as to what the value could be?
TIA
Schematic:
http://www.xatlantis.ch/doc/nxt/Appendix%201-LEGO%20MINDSTORMS%20NXT%20hardware%20schematic.pdf