Apple II

Hey all! I recently picked up an untested DuoDisk for use with my Apple IIe. It came damaged, which was fine, just a bit of brittle plastic that I had to repair. I'm currently at the stage where I've troubleshooted a lot, but nothing has really changed. At the beginning, the LED on the front wouldn't turn on at all, and I only heard the spin motor (not the stepper) spinning endlessly.

Hello All, 

I just received a IIGS ROM1, it has a memory card and no floppy drive or hard drive or ...

When I start it, it says Check Startup device...

I tried by adding a Apple IIe Disk controlleur and boot from a PRODOS Floppy but nothing changed. 

Is there somewhere I can get basic knowledge on how a IIGS is working ? 

What should this machine be equiped with ? 

I need to changed the internal battery, it seems to be soldered :( what is the best option, what is the reference of the battery ?

Hello, hoping someone can set me on the right path, my knowledge is limited as the las time I played with an Apple II I was a student in Jr. High in the computer class run by Mrs. Quigley.  A bit of backstory in case it'll help.  A B&H Apple II came to me with a dead power supply, and only one ROM CARD 600 in it.

I tried repairing the power supply with a capacitor kit but was ultimately unsuccessful.  I ended up getting a replacement PSU from ReActive, and that got the Apple II booting up to a garbage screen to the monitor prompt.