Hey everyone!
I finally got around to building one of the ACILL Amiga 4000D PCBs that I bought a few years ago. I was able to source most of the parts new (excluding custom chips and ports) with a few exceptions.
When I turn on the system, I get a completely black screen with an occasional minor change in brightness. The system does not attempt to boot off the floppy drive, so I know it's not getting to the boot process. The processor is a Commodore 040.
Troubleshooting I've done:
- Verified every component is in the correct location, facing the correct direction.
- Checked all solder joints for quality and shorts.
- Ensured R465 is on PCB.
- Tried PSU, processor, ROMs, and RAM from a working system.
When booting the original working A4000D I have, the screen is black when first turned on, then quickly changes to a lighter black (gray) during the startup process. This PCB never changes to the lighter display.
Thanks for any help!
Heather
