I reversed the polarity on my core module to J2

Testing/Troubleshooting
1

I reversed the polarity on the core module directly to the J2 pins.

Where do I start to troubleshoot, what componets do you think are dead.

I had every IC in pic and Optocoupler and also a display.

What parts do you think is borken:

  • resitors

  • capacitors

  • electrolytic capacitors

  • PIC18F4685

  • Optocoupler 6N138

  • Diode

  • TrimPot

  • Crystal

  • PCB?

  • LCD

The volatge was correct but polarity wrong.

Now I got some strange chars on the display.

http://imageshack.us/clip/my-videos/534/hqg.mp4/

Where do I start?

post-9642-0-43714900-1317041288.jpg
post-9642-0-43714900-1317041288.jpg720×480 26.3 KB

2

First of all, replace the PIC.

You could try burning the bootloader in, but it could possibly be dead.

When you have a working PIC installed, try uploading code again. This will indicate if the opto has failed too.

Are any of the electroltyic capacitors bulging? If they are, replace them, if not, you might be in luck.

Good luck!