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Here's the version on YouTube if you prefer to watch there: https://youtu.be/TEKa_3LN_QA

The Macintosh IIsi and LC series are known to have power supplies that tend to fail. Instead of rolling the dice by trying to recap and clean your original PSU, let's take a look at two options that offer guaranteed success and minimal hassle (with a bonus option for if you hate yourself).

Links:

CayMac Vintage Power-Up-IIusi PCB kit for Mac IIsi: https://ko-fi.com/s/e75a010465 
With it, you'll also need the following...
Power supply module for IIsi (affiliate link): https://amzn.to/3YgXPMT
ATX pico PSU for IIsi (affiliate link): https://amzn.to/3Nl2gjx

CayMac Vintage Power-Up-Pizza PCB kit or LC series: https://ko-fi.com/s/fc8716098b 
With it, you'll also need the following...
Power supply module for LC-series (affiliate link): https://amzn.to/3Y1hmPX
ATX pico PSU for LC-series (affiliate link): https://amzn.to/3Nl2gjx

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Music by Epidemic Sound (https://www.epidemicsound.com).
Intro music by BoxCat Games (https://freemusicarchive.org/music/BoxCat_Games).

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Comments

Michael Dragone

Thank you for also posting this to YouTube.

Joel Crane

It might be tough to remember this far back, but is that IIsi the one that came out of my garage pile? It might have had an Idaho Department of Education badge somewhere. Also nice to see my BlueSCSI bracket, I wonder how the fitment is since I haven't been able to buy a Pico W to verify that things line up properly.

Markintosh

Sweet! I’ve been waiting for these! CayMac makes great stuff. Thanks Colin!

Mac84

I'm so glad we're getting IIsi PSU replacements... those are a nightmare to work on!

outaspaceman

A timely reminder I have new caps sitting on a shelf not the on the PSU inside the Acorn Electron..😳

Alan Grassia

It’s time to recap my LC III and I ordered my PSU parts last week. Thanks for highlighting this modern drop in replacement.