All this talk of washing logic board actually made me do it : On Friday, I put one of my dead SE/30's logic board into the dishwasher and set it to "Hi Temp" and added detergent powder. After the hot bath, I hung it dry for three days and just now finished putting the board back into the case. And the results:
Before the wash - SE/30 boots to a blank white screen with various black lines/dots on it, and dead... After the wash - SE/30 powers up with a resounding Bong sound and boots right into System 7.5 desktop. Everything works now. Hey! Xin P.S. I have two SE/30s. This one was given to me for free - I did my risk analysis with an exist strategy, so to speak, in case the dishwasher ruined it. I also attempted reseating everything and put in a new battery on the dead SE/30 board before resorting to dishwasher, so I know for certain it's the dishwasher that did the trick and revived my now bonus SE/30. -------------------------------------------------- From: "James Fraser" <[email protected]> Sent: Friday, October 23, 2009 8:14 PM To: <[email protected]> Subject: Re: Silent Mac Classic > > Hello, > > --- On Fri, 10/23/09, Doug McNutt <[email protected]> wrote: > >> The operations I have actually seen used plain old tap >> water but here in Colorado Springs that means treated >> surface water which is really not so high in dissolved >> minerals. Good old ocean salt would be a terrible residue to >> leave. Any humidity in the local atmosphere would make NaCl >> into a conductor. > > Ah, "mineral deposits" was the consideration my (tiny little) mind kept > dancing around, but couldn't quite come to grips with. > > It sounds like rinsing circuit boards in tap water may/may not be a good > idea, depending on the so-called hardness (mineral content) of the local > water. Thank you for the breakdown. > > > Best, > > James Fraser --~--~---------~--~----~------------~-------~--~----~ 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/ -~----------~----~----~----~------~----~------~--~---
