68kMLA Classic Interface

This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.

Click here to select a new forum.
Macintosh IIci
Posted by: jmacz on 2023-05-07 19:56:14
Oh, also forgot to mention that while I was in there, I replaced the fan with a Noctua after seeing @joshc 's thread.
Posted by: ironborn65 on 2023-05-08 14:52:14
Thank, for the IIsi can be tricky because an ATX does not fit in, not even a SFX.
Posted by: jmacz on 2023-05-08 19:06:59
Thank, for the IIsi can be tricky because an ATX does not fit in, not even a SFX.

I see. Yeah the one I mentioned is a micro ATX so smaller, but not sure if it will work with your IIsi. It was another option for your IIci.
Posted by: ironborn65 on 2023-06-01 02:45:06
I successfully completed the ATX conversion.
I connected the fan and the relay for the 230VAC for the monitor.
To reverse the PS-ON I used a NPN. To avoid a larger PCB I inserted the resistors in the wires protected by the heat shrink insulators.
The NPN transistor is connected to the 3 wires and wrapped with the heat shrink.
I left the PSU unused wires , just in case....
The 230VAC input has now two sets of filter capacitors, I think this is not an issue
1685612365148.png

1685612390445.png
Posted by: jmacz on 2023-06-01 22:47:32
👍😎
< 2