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blog:mac_iici_refurb [2020/07/27 20:13] – [Atto SCSI] john | blog:mac_iici_refurb [2020/07/30 17:01] (current) – [Testing] john | ||
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A list of capacitors and ratings is available on the [[https:// | A list of capacitors and ratings is available on the [[https:// | ||
- | * **11x* | + | Tantalum: |
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- | | + | * **2x** |
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+ | Electrolytic: | ||
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+ | * **1x** | ||
Some IIci boards vary, so there may be one or two less/more of the quantities listed. But those are the main ratings needed. | Some IIci boards vary, so there may be one or two less/more of the quantities listed. But those are the main ratings needed. | ||
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**[Update July 26th 2020]** - Ordered a set of replacement capacitors and waiting for their delivery. | **[Update July 26th 2020]** - Ordered a set of replacement capacitors and waiting for their delivery. | ||
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+ | ===== Removing Failed Capacitors ===== | ||
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+ | Original capacitors still in place; some of them are showing clearly visible leakage: | ||
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+ | Original caps removed: | ||
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+ | Of the dozen or so capacitors removed, I lost a single solder pad on one of them, and I've had to scrape away some of the solder mask and bridge it to one leg of the capacitor - it's the right audio channel, near the 3.5mm stereo output jack. | ||
+ | ===== New Capacitors Fitted ===== | ||
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+ | {{: | ||
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+ | Not my neatest work, but I found I was out of desolder braid when I came to start the work, so it's as good as it can be, based on the circumstances. | ||
+ | ===== Testing ===== | ||
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+ | And to prove it works, here's a recording of the actual system powering up (albeit in 'death mode' | ||
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+ | {{jPlayerPlaylist> | ||
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+ | I don't think I've //ever// heard it as clear as that! :-D | ||
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+ | A weird thing happened however on reassembly of everything... |