68kMLA Classic Interface

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PSU Schematics
Posted by: Stan Johnson on 2024-03-14 08:32:24 Hello, I would like to re-cap the PSUs in a few IIci systems and a Quadra. Is anyone aware of where the schematics for the following PSUs can be purchased or downloaded? If the schematics are not available, does anyone know who might own the copyrights now or perhaps reverse-engineered the PSUs to create schematics? The original companies appear to no longer be in business. ASTEC AA15830 ASTEC AA16870 ASTEC AA15831 DELTA SMP-120EB thanks for any information -Stan Johnson
Posted by: chue on 2024-03-17 14:15:43 Sorry I don't know of any schematics, but I do have a couple of capacitor lists here: IIci power supply recap and component identification I am recapping two different IIci power supplies, and am having trouble identifying some components. The first looks like a film capacitor. It is the rectangular shaped black component in the first photo with marking 2.0 uF 5%. In the second photo, there are many yellow rectangular components... 68kmla.org The lists are for the following ASTEC models: AA15830 and AA15831
Posted by: Stan Johnson on 2024-03-18 06:17:23 thanks for your reply; the capacitor lists are good, but of course schematics would also be helpful for troubleshooting and might allow completely rebuilding the PSU from scratch with more modern components.
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