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Macintosh SE/30 bong chime and cursor, but no boot

Posted by: eike on 2020-09-28 21:13:28 Hey, I am currently trying to restore an SE/30. When I got it, it showed a repeating cursor pattern (see images) and made no sound at all when turned on. Since then I have recapped it and tried fixing some corroded pads of UC8 and OD8. After this it started making a chime (the same one this one does: https://www.youtube.com/watch?v=mKJszJMRZM4), but the pattern remains. I have read the Classic Mac Repair Resources document and without the chime, the closest description would suggest a broken RP2 filter IC that has to be replaced. Does anyone have experience with this particular failure mode and can confirm this or suggest a different path to take from here? Thank you in advance! Image: The pattern is completely regular and static.

Posted by: eike on 2020-09-29 00:00:03 For some reason I cannot change the title or edit the first post. Of course I do not get a cursor, just a static pattern that (to me) looks like a repeating cursor on all lines. And the chime is the classic SE/30 crash chime.

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