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Wow great job, congrats on getting it going again. That board was with a stack of 4 840AV boards that originally was part of Apple waste back in the day when the 840av was current. Apple were less careful with their waste back then and these were thrown out due to cosmetic issues. At the time...

Happy 40th!

There is also this clone made by ALPS (MEADB-), But inside we have a familiar IC. Not sure if the membrane layout is the same though

Great project , I have a few different ones Made in Czech Rep. 3 Screws on base Assembled in Thailand, 4 screws on base

The VGA monitor config is not available on the IIsi, best to select something like "Apple Macintosh Color Display" or any of the monitor types here without the '*' https://bitsavers.org/pdf/apple/mac/monitor/monitor_sense/hw_30.pdf and hope the monitor can do composite sync / sync on green

Great work , I got a chance to try it out today on the Powerbook 180. Speed is about 30K/s. I coudn't pin it down, but it seemed I had to ping out from the powerbook with MacPing to get the network to go live. Will do more testing ..

Sounds like a cool event, here are my two entries. o7

Some cool things are possible with SCSI target mode and bluescsi, here I have no drive at all in IIsi, both the HD and the CD image are mounted over target mode from my powerbook 180.

DM sent

Sold a lot of pcs with this case back in the day, I knew I had at least 1 hanging around , I think I have the bones of a second. Yours for postage if you want. It would go though normal post as none of the couriers I use will send to uk. These pictures were taken today.

This might be of interest

Oh thanks for that, That will be next on my list to check.

Back in late 2003 I was given the offer to buy a dead G5 Dual 1.8, for very very little money. It was doing what yours is, power on, immediate protection shutdown. I removed 1 processor in turn and discovered one of them had a short . One cpu had visibly blown mosfet or transistor . I...

It's possible the scsi chip is blown but I would look also around UD11 (VIA) , as there are 3 caps there that can leak and do damage there, and some control signals for scsi pass through that IC.

That looks like a capacitor, maybe some sort of hacky way to stabilise screen during floppy access , rather than address the fault directly.

Yes, but some 16bit cards may interfere with the floppy. Here is a picture with a tandy style sound card

I did something like this a few years back, mainly to use cheaper sound cards but it works with a modified XTIDE bios and also works with ISA SCSI cards and network cards. Here is the github and gerber files if you wanted to make your own, its very simple...

Correct, battery is not needed to post. Not sure how you select video mode (MDA,CGA, VGA) , if its soft set with the FE2010A.

No doubt you have checked your work, but it may be worth checking those resistor solder points with a multimeter to make sure their is continuity from there to where the tracks go. Also those DIP sockets don't look the best, the fact that it does not beep at all would make me want to check the...

Yes and it's a more desirable keyboard . I suppose you need to findout if keyboard is holding reset low or shorting 5v down maybe isolate the reset pin( or wire) and see if amiga comes up And measure for shorts across caps , or across 5v snd ground pins 1 DATA 2 CLOCK 3 RESET 4 +5V 5 key...