Hi, I have a friend with two test instruments that he's going to lend me to figure out how to test some PSU transistors. But I'm afraid I'm pretty new to this, and hoping you can give me some direction. Will these two instruments help me figure out if my transistors are working? I am testing a PSU board out of a home computer printer. I've already determined that one diode needs to be replaced, for example. My friend is willing to let me borrow his Fluke 87V Industrial Multimeter, and an older Fluke Oscilliscope. Thanks for your input.