Apple II

Greetings all!

I have just come into the possession of an Apple ][+ which unfortunately doesn't seem to be working.

Details:

On the motherboard there's 820-0001-07 written with copper etching next to the PSU.
At the back corner next to the PSU there's a white field with either '10/8' or '1078' in black lettering.
(Very vague)

The Keyboard encoder is marked with 'Encoder Discrete Keyboard' and '605-x105-'
(The last '0' is incomplete, so could even be a '9')

I just got my Apple IIe I bought on eBay and I'm having some minor problems mostly with the keyboard. The Q key I have to press downward a bit to get it to print Q and the O key isn't even working at all. Is there anyway I can find out what the problem could be? Thank you.

If you are interested in my applet/midlet java based Apple 2 emulator, you van give it a try here:
http://rootshell.be/~disident/P84Ever/new/en/index.htm

The other day I decided to break out my good ol' Apple II with DUODRIVE and monitor and give it a go after some 15 years of inactivity. My Apple has an 80column + 64K explansion card, a Practical Peripherals Graphicard and the duodrive controller.
Well the system boots up, but won't load any of my over 100 5'25" floppies. It will load some data, but it is all corrupted. I can see this because the raster images that appear are garbled, and the garble changes if I reset the Apple and reload the same floppy.