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Recent content by isokinetic

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    Mac SE/30 suddenly strange screen. [see photo] Startup Chime good.

    Hello! Thanks again for all your suggestions. I bought the oscilloscope and found that all traces were intact. I soldered a pad to the via (no glue, just the pad and lead solder). I then replaced UE8 per your suggestions. – It boots to 7.5.3 and I'm as happy as can be. Many thanks. That was a...
  2. I

    Mac SE/30 suddenly strange screen. [see photo] Startup Chime good.

    Hello! So I got a bunch of other stuff off my desk and thanks to your suggestions bought a soldering station etc. Removing the UE8 proved more difficult. Eventually frustrated, I cut its legs. When removing the legs from the pads I damaged two pads (see photo). How would you go about fixing...
  3. I

    Mac SE/30 suddenly strange screen. [see photo] Startup Chime good.

    Many thanks for your many and kind replies. The legs/joints on UE8 look a tiny bit corroded, but the label on the part is gone (burnt?). [see image] This built my resolve to go a little more serious with this hobby. I don't own an soldering iron, isolating transformer, or oscilloscope. all of...
  4. I

    Mac SE/30 suddenly strange screen. [see photo] Startup Chime good.

    I‘ve recently acquired a recapped SE/30 that was working. I had it running three hours when suddenly the screen did not longer work properly. I had to restart using programmer switch. It does chime but the screen only shows a strange image. I swapped the analog board with a working 1/40 (both...
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