unless Larry pina's book is wrong. He is the authority on vintage Mac repair. And it's on mine. Dead center, black round disk with an inner white disk and a + shaped tool control. There are two wires which attached to the board just above it. There are two completely different analogue boards, so the other may be in a different place, though Pina does not mention this. It strikes me that to safely adjust the voltage one must have an extremely long tool to control it from the other side of the monitor with the unit assembled and powered on. If you still can't find it, I'll take a picture of my board and post it, just in case yours really is different.
On Sep 15, 1:59 am, platnicat <[email protected]> wrote: > Hmm. Are you sure this is on the Classic? > > On Sep 14, 10:46 pm, Mac128DOTcom <[email protected]> wrote: > > > > > Ah, no. That's like putting black tape over the check engine light on > > your car's dashboard. Eventually things will get really bad. The > > voltage pots are in the middle of the board, marked PP1 > > > On Sep 12, 11:52 am, platnicat <[email protected]> wrote: > > > > The drive DEFINITELY is D.E.A.D. I put it in an external SCSI > > > enclosure with no fans, and it makes no noise whatsoever. I had read > > > that stiction article before, and I tried that too. Also, the 5V was > > > at around 4.5, and the 12V was at around 10! I couldn't find an > > > adjustment, however, so I expanded the vertical and horizontal to fill > > > the screen. The jumpy video is much less noticeable and now the screen > > > looks gorgeous! > > > > On Sep 11, 7:21 am, chrisA <[email protected]> wrote: > > > > > platnicat wrote: > > > > > However, the HDD isn't being recognized in any disk > > > > > format utility I tried. > > > > > Does it mount on the desktop? > > > > > Maybe you know that non-Apple drives aren't recognised by Apple HD SC > > > > Setup, though third-party disk formatters should see it if it's still > > > > alive. Ernst J. Oud's web page "Formatting Macintosh SCSI drives" has > > > > a host of suggestions and links to formatting software: > > > > >http://www.euronet.nl/users/ernstoud/scsi.html > > > > > One way to tell if the drive is spinning up is to temporarily stick a > > > > toothpick through the SE's fan blades to stop them whirring, and then > > > > listen for drive noise. No noise probably means no drive.... > > > > > If it seems dead, the problem may be "stiction", discussed here: > > > > >http://ccadams.org/se/stiction.html > > > > > Good luck, > > > > Chris Adams. > > > > --- > > > > The Mac SE Support Pageshttp://ccadams.org/se/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/ -~----------~----~----~----~------~----~------~--~---
