Yamaha PSR-S670 keyboard parts issue

Hi all
I am P Sam and my email id is "psamuelmerchant@gmail.com"
I am from India.
I am facing a problem from more than one year.
I have a PSR S670 YAMAHA KEYBOARD.
From last one year it is not working. I am not finding the required part of it in India also I tried online with many good suppliers and I found only one IC, still one more Transistor I need and I don't find it. Please let me know if you know where we can find this psr parts.

thnx