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My Classic Mac defaults to LocalTalk instead of Alternative Ethernet and doesn't save my selection of Alternative Ethernet on restarting which I would like as I am using a Mini Asante EN/SC for file sharing. Is there a way of making my selection stick?

FINALLY DIAGNOSED EXTRA MILE CLUB The freeze was being caused by a failing hard drive!

I seem to have fixed this problem now by taking the RAM out and cleaning all the contact pads and sockets. Oh joy!

My SE/30 is now freezing during startup from a cold start and on the second try it starts up no problem. It also freezes from a cold start with extensions off and I think it's happening before the extensions are drawn on the screen. Would Macsbugs show me what's happening? and does it sound...

FIXED Many thanks for all the help as this fault was caused by was a shorting Bournes filter at RP10, but I also enjoyed checking all the traces from the SWIM chip and using a heat gun for the first time.  ::)

I've just got a Farallon card but don't know what the three position switch does? 

Or a short to ground on pins 5 and 16, 

Just tested RP10 again and I'm getting 000.2 ohms across pins 1-20 and 10-11 and 47 ohms across most of the others but 28.6 ohms on pins 5 and 16 to ground !?

The Dead Mac Scrolls says check/replace two Bournes filters for the SE, so with the SE/30 I'm guessing the filter to check is RP10 as shown on the BOMARC page Does anyone know the typical values across the pins of this filter?

Thanks, will do

I read about  your experience somewhere else on the forum but don't own a heat gun or any kapton tape, ...... and  worry I might ruin the board, ... but maybe I should first try lifting a SWIM off a beyond repair board to get the feel of doing it? Are there any tricks to lifting a chip of the...

They all check out and there doesn’t seem to be any damage around the SWIM chip, so now i’m stumped!?

Wooo! probing both sides of the board  is getting tricky but i have to check them all, thanks

Still stuck, coming from the 68030 chip?

I'm checking for continuity from the SWIM chip to other components but cant get my head around what pins 37, 40, 41 and 42 connect too using Apple schematics. Can someone point point me in the right direction on these four pins?

Yes, I actually tried two floppy drives with the same result and at the moment I'm checking the traces from the SWIM to the ribbon connector

I've just got another SE/30 which will only read write protected floppies and doesn't recognise unprotected floppies, but asks to format them, and when I try  this it makes the usual chugging sounds but then fails at the end and says the disk is bad. Connecting a, known to be good, floppy drive...

I cant see anything missing on the FDD and the computer had no HDD when I got it so It must have got jammed in there by sheer chance on a workbench. I have now pulled it out with tweezers.  :-)

After some serious inspection of the back of one of my SE/30 logic boards  I found the shown  object jammed between two pins of the UK6 Video ROM? Can't be right surely?

Is there a guide somewhere on how to read and understand Apple schematics between pages? as I have traces to follow too and would like to know how to do this.