Can you describe the failure symptom?
If you upload a detailed photo, one of us may be able to help you repair your board. Many times the problem is only a shorted diode, in which case it can simply be removed.
Otherwise, if you need a board ...
http://www.onepcbsolution.com/stm316021 ... small.htmlThe price is US$40, plus $10 for a firmware transfer. The 8-pin serial flash memory chip, or its contents, must be transferred to your donor. It is located in the top left corner of the following photo:
http://ep.yimg.com/ca/I/yhst-4446369223 ... 45_2644092