Replacement transistors for Yamaha PM1000 master module
I am busy recapping the master modules in my Yamaha PM1000, but I may have damaged one of the transistors. I'm thinking of replacing them all if I'm gonna be doing one anyway. Problem is, I know very little about transistors and I have no idea what to get as replacements. The transistors on the modules are marked 2SA841 and 2SC1681.
Any idea what would be a good replacement or info on how I go about searching for replacements?