The posts here are very helpful, thank you for all the topics over the past few years.
In the process of restoring my //si from 1990. My main question is:
What is the minimum needed to test the motherboard?
The objective is to get an indication that refurbishing the board was successful with minimum connections.
1. Does the PRAM battery need to be installed?
Found answers for other Mac II models but not specifically the IIsi.
2. Remove all SIMMs?
Assuming all SIMMs can be out, the built-in RAM should be enough.
3. Floppy or HD?
I recall that without a drive it should boot to a question mark screen, but will it still audibly chime?
4. Video?
With video, success should be clear because the screen will show happy mac, sad mac, etc.
Without video, that leaves only audio for verification.
5. Keyboard?
The lights on the Apple Extended Keyboard II should light up and at some point of success caps lock can toggle its light - does that work before the OS starts up?
6. Speaker?
Without video, this is really the only indicator of success, with the proper chime. Failure is indicated by click click click click.
Some notes and background:
In the process of restoring my //si from 1990. My main question is:
What is the minimum needed to test the motherboard?
The objective is to get an indication that refurbishing the board was successful with minimum connections.
1. Does the PRAM battery need to be installed?
Found answers for other Mac II models but not specifically the IIsi.
2. Remove all SIMMs?
Assuming all SIMMs can be out, the built-in RAM should be enough.
3. Floppy or HD?
I recall that without a drive it should boot to a question mark screen, but will it still audibly chime?
4. Video?
With video, success should be clear because the screen will show happy mac, sad mac, etc.
Without video, that leaves only audio for verification.
5. Keyboard?
The lights on the Apple Extended Keyboard II should light up and at some point of success caps lock can toggle its light - does that work before the OS starts up?
6. Speaker?
Without video, this is really the only indicator of success, with the proper chime. Failure is indicated by click click click click.
Some notes and background:
- PSU recap failed so for now I'm using an ATX supply with a modified connector (including 5v trickle).
- There are many things to get working (BlueSCSI, PSU, video, etc.) and I want the motherboard to work before investing in the other items.
- I don't want to spin up the floppy or HD yet and don't have my BlueSCSI working yet.
- Griffin Mac-PnP is used for video but I've never confirmed that this used unit works or that the Dell LCD will display its output. So far the monitor won't come out of sleep in any test.