Hi,
Can you post a hand drawn schematic?
Use pen(cil) and paper and include component names and pin labels.
When you do this, draw it by reverse engineering your project.
As already asked, some picture(s) of your project would be appreciated.
What is your 15V power supply, link data/specs?
Did you make the L200 power supply, or purchase it ready to go?
Thanks.. Tom... 
