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Oh yes, thanks. I recall reading about that somewhere. I should repeat my benchmark and add a run with no video card and the disk cache set to use up the remainder and see what results.

Since I don’t know what the big cache trick is, I should look at the default settings for the disk cache and post that value. All I did was run MacBench 3.0 and post results without jiggering the disk cache size.

Good call, I added the front of the card. It’s what I get for posting from my iPhone where I can hardly see anything.

Yes, Macintosh Display Card is the name printed on the silkscreen. It came with the IIsi along with the angle adapter when I bought it via Yahoo Auctions Japan. I don’t know if I came original or was an accessory.

I recently restored a IIsi with a Macintosh Display Card and did the following benchmark.

I have a similar problem where my RaSCSI suddenly stopped working. I am able to use the web interface, and I can connect to the AFP server running on it from a modern Mac. Connecting a classic Mac via the SCSI cable - no dice: no AFP, no disk images, no Ethernet. All used to work just fine...

I got death chimes on my IIsi due to poor resoldering of the PSU connector that I removed to repair the +12 and -12 volt traces that were broken due to leaking cap goo from the PSU. Have you checked the PSU connector for broken traces or corroded solder joints?

I just finished a successful IIsi restoration. Fun and challenging project! Here are a few tidbits from my experience. Definitely, my Sony PSU needed recapping - it barfed its brown cap goo all over one side of the logic board and on the bottom case and all over itself, including the underside...

I had the exact same problem with my IIci. My first thought was power supply. However, swapping to a power supply from a Centris 650 yielded the same result. My next thought was the IIci startup circuit on the logic board near the C10, C12, and C13 cap cluster. Sure enough, I found broken traces...

I thought I'd provide an update...with a good outcome. I decided to follow the advice provided by @mrkirkby and double-check the ADB chip. I had one or two connections that were suspicious enough that I decided to remove the ADB chip, clean it and the pads, and reinstall. Sure enough, that...

It's not a power supply problem. I used my SE board in my SE/30 and it booted just fine. I believe I narrowed the culprit to a faulty filter, 155-0007-E located at L13 on the SE/30 board, and marked as L1 LNET on the schematics. I think the pin numbering is incorrect on both the Apple SE/30...

I checked my ADB chip again from a continuity standpoint - checking both the solder joints at the pads for continuity as well as via the schematic to neighboring locations - and continuity checked out fine. I also checked all three of my resistor packs as a control case for RP10, measuring...

Awesome, thanks for the info. One more data point to add. I had a "doh" moment and decided to test my SE/30 board in a working SE machine. Ended up with the same result - chime, gray raster screen and no progress to mouse pointer. Voltages measured similarly on the SE/30 board: +12V rail...

I'm following this thread because my SE/30 just started showing the same symptoms - boot chime followed by the gray raster screen and no mouse pointer. It worked fine after a logic board recap and only just started showing this problem. Another possibly related problem is in recent weeks when...