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    LC III: internal speaker works intermittently when pressing on the external audio jack. Audio plays through external jack when connected.

    Where would I source a replacement audio jack component for the PCB? I tried search for some this morning and none appear to be a proper fit. I assume that Apple would have sourced a component in bulk at the time, but is it still manufactured? Or would I have to salvage the part(s) from...
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    LC III: internal speaker works intermittently when pressing on the external audio jack. Audio plays through external jack when connected.

    What I didn't include in that video was from a longer cut of 4 minutes, where I did indeed push a headphone plug in and out repeatedly after blitzing it with contact cleaner. Based on the smell and the properties of the cleaner, is it anything more special than just aerosolized isopropyl...
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    LC III: internal speaker works intermittently when pressing on the external audio jack. Audio plays through external jack when connected.

    I totally understand that there's no warranty and no returns for stuff like this. I took a gamble and lost. I'm not against trying to repair this Mac, but I would have possibly skipped the listing or made a much lower offer if I knew about the water damage.
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    LC III: internal speaker works intermittently when pressing on the external audio jack. Audio plays through external jack when connected.

    Thanks. I already wrote to the seller asking for a partial refund. They have over 10,000 sales and deal in vintage electronics. This should have been disclosed and I would have paid about half as much for a "parts or repair" Mac. In addition to having a hard drive that was DOA (I bought it...
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    LC III: internal speaker works intermittently when pressing on the external audio jack. Audio plays through external jack when connected.

    Thanks for the diagnosis. What can I do about the audio jack? Do you have a suggestion for cleaning or repairing this, besides a bath of 99% IPA ? I had already talked the eBay seller down from their astronomical asking price because the computer was not booting off the hard drive, just a...
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    LC III: internal speaker works intermittently when pressing on the external audio jack. Audio plays through external jack when connected.

    I have an LC III that boots and runs normally, but the internal speaker doesn't work. Well, at least I thought it didn't at first. External audio works; I heard the startup chime, quacks, and wild eeps through headphones. By accident I was pushing the headphone jack while turning it back on...
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