To cut a long story short, while building my HxC into a vintage PC case I have managed to short pins 15 and 16 on the LCD header together (due to a dodgy LCD extension cable) . This had the effect of making the backlight no longer work, even if I plug the LCD module directly into the HxC. I have tested the backlight on the LCD module by applying 5v directly to pins 15 and 16 and it works fine, so it isn't the £2 LCD module at fault
.I think I've probably blown something on the PIC by shorting the LED backlight output, but the strange thing is that everything else seems to work fine, it reads/boots OK and the actual data is displayed on the LCD, just a bit hard to read with no backlight.
So my question is what is the best/cheapest way to fix it? Can I just replace the socketed PIC and re-flash the firmware or is their some bootstrap type code in the PIC which is written by Lotharek? Do you think the HxC will still work reliably if I have indeed damaged part of it? If so I may just wire up the backlight to be on all the time rather than buy a whole new unit.
TIA
Riddley