Hello!
I am working on an A500 6A motherboard but I noticed something that I don't know if it is normal or not.
Whenever i test for continuity between 5V and GND, I assume the should be none, ever. But what I get is a very brief beep (about a second or so) from my multimeter and then silence. Then I tried to measure resistence and I get something around 60 Ohms between 5V and GND. However the machine works (turns on, reads floppies, makes sound, has video output, reads the mouse...) The only thing that does not work at all is the trapdoor expansion. I put a 512 KB expansion with clock that I know works fine and neither the ram nor the clock are visible to the Amiga. Other that that all appears to be OK.
Are those readings something normal? If not... any advice what to look for?
Thanks!
- Efrén