It's on page 8. Here's a pic of it, and here is a link to the full bomarc se/30 schematics.
http://absurdengineering.org/library/MASTER%20Schematics/Schematics%20-%20BOMARC/Macintosh%20SE30%20Schematic%20(BOMARC)/BOMARC%20SE30%20Schematics.pdf
Check the drive transistor on the underside of the floppy (b7). It'll be close to the plug going to the eject mech. I had this same issue with one of my drives and this was what caused it.
You can find a copy of the schematics in the se/30 schematics done by bomarc.
That or you have an intermittent. That's why I mentioned checking for tarnished chips (blackening of legs). A lot of chips from that era have silver legs and will tarnish, causing an intermittent (just by temp differences) or outright breaks. I've also seen quite a few bad sockets from that...
No worries... I haven't worked on a iie in a while, but this is what I'd check from your symptoms.
First off... 9 times out of 10 it's always been the ram in my repairs, but if not that...
My first basic check would be to look for any tarnished chips since it's been sitting a while.
My next...
It sounds like it might be the power supply. Have you checked the voltages? Sounds like you're getting good 5v on cold boot, but degrades as you use it. It could be (probably is) your power supply caps are are ready for some new ones.
Have you checked flodgap's gopher site?
Floodgap ANSwers: Apple Network Server Software and Downloads https://share.google/fjdY0c3q452PwuYsR
Not sure if he has any info on setting it up there, but remember reading he used to run apache on his ANS.
I'd look it over first. It might be as simple as a bad solder joint. Also visually check everything before replacing the analog ( the motherboard and floppy). You never know what the previous person did or tried to do.
I haven't had much luck with those analog boards. Of the five i've worked...
I'd check the logic / traces above C7. If the board wasn't cleaned properly after the cap kit the leaked electrolyte continues to do damage. The video circuit is right above C7 and is prone to capacitor damage.
Sounds like your not getting 5v. Your going to have to check your solder joints on the power connector before you can asses what you'll need. (besides caps - don't forget the rifa's). Check for any battery damage too. I just got done repairing 2 that the batteries had leaked on - no fun...
Nice! I have the exact same machine with a Newertech G4 in it. I'm runng a 7000 so thats a little different, but it rocks too. Old school asthetics & hardware with oomph! One of my favorite machines!
(Please don't do this if you don't know the safety concerns of working on crts - this test requires the monitor powered up).
Make sure Iv1 has its required working voltages (pin 29, 7). If you haven't downloaded the schematics they're available on internet archive. You want to make sure the...
All of the electrolytic caps need to be replaced. They're all leaking already. Bet on it. If you haven't capped your power supply you best do that too.
As for your weak sound. Make sure to check your speaker and the leaf springs that connect the speaker to the motherboard (clean them / check...
Something to watch for when you rebuilding / capping this monitor. There are 4 compression leafs (2 at the top, and 2 at the bottom). Their function is to tie the tube to the chassis ground to discharge the static from the tube. The leafs in the one I rebuilt were all broken due to metal...
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