It's been years since I've had to do any board-level work on the compact Macs. But in virtually every one I opened up, there was an issue with that dang multi-pin power connector, as it leaves the analog board. In almost all cases, there were cracked solder joints on the board-side of the connector. Had this in Plus, SE, SE/30 and one Classic IIRC.
Carefully resoldering / reflowing them fixed the issues. It's one of those things - if you haven't done it yet, do it just for drill - get it out of the way. If you want to get fresh, solder-suck as much of the old as you can, and resolder it with SN63/37 material. That's all I've got. ;-) On Sat, Apr 2, 2016 at 11:28 AM, Ian Finder <ian.fin...@gmail.com> wrote: > The flicker is gonna likely be aging capacitors on the analog board. > Ideally you'd replace these. > For the pincushion I believe there are magnets on the yoke that can be > adjusted... > > Sent from Outlook for iPhone > > > > > On Sat, Apr 2, 2016 at 2:51 AM -0700, "David Griffith" <d...@661.org> > wrote: > > > > > > > > > > > > I recapped a Mac SE/30 a few months back and only just now put it back > together. After a false start with dirty contacts on the ROM simm and > resulting irregular vertical bars, the machine is working again. There > are no more zipping sounds coming out of the speaker. Two problems > remain: > > 1) There is slight pincushioning along the bottom of the CRT, about a > third of the way in from the left. > > 2) The CRT produces a rather noticable and irritating flicker. I don't > remember the one-piece Macs flickering like this. > > I think a cleverly-placed magnet might fix the pincushioning and recapping > the analogue board would remedy the flicker. Can I get some thoughts, > commentary, and suggestions on this? > > > -- > David Griffith > d...@661.org > > A: Because it fouls the order in which people normally read text. > Q: Why is top-posting such a bad thing? > A: Top-posting. > Q: What is the most annoying thing in e-mail? > > > > > >