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Yes! the machine will work, aparently the replacement RTC base on https://hackaday.com/2023/01/13/swap-the-clock-chip-on-the-mac-se-30-with-an-attiny85/ has some timing issues. I put a original back, and everything work.

IT was the RTC IC - OMG! So the SCSI issue is resolved. Now to the Horizontal Bar logic board. No sound...Socket are new, for the ROM and SIMM. Swap ROM with another working system, same behavior.

Update, the board with SCSI issue, It can see the drive or BlueSCSI v2 volume, mount it, formated, partition it, install os but it will not boot from the HD or BlueSCSI. Now if I turn off and back on qucik, the machine boot from HD or blueSCSI. Regarding the Horizontal bar, I dont get any sound.

Update: New SCSI IC, no luck. Out of options....

On the First Logicboard - SCSI issue. I remove the socket for the SWIN and SCSI IC. No change. I order new SCSI IC from Mouser. Will update Thursday!. The Second Logic board. No clue yet!

All IC I took my time and clean them, use a brass wire brush to remove any rust. Plus use a multimeter with a needle probe to verify and trance every connection on the ISCSI, SWIN and Glue.

Analog board is ok, try with other SE/30, work fine! Already verify all the soldering point and check with multimeter. Board was clean using a Sonic Cleaner and 99% EPA bath after it! The Apple HD was remove 3 days ago from a working SE/30 upgraded to a BlueSCSI v2. Try BlueSCSI v2 with...

The logic board in the Left - with the SCSI issue The logic board in the right - with the horizontal bar issue

Test with origi Working Original Apple SCSI Hard drive with System 6 on it!

Out of ideas!

5V is there. Check the Diode to verify is not going anywhere. everything check out!

Thanks for the feedback but no RTC, I created my on RTC IC plus I have replacement from donor boards. Test all RTC IC on good Logic board. They work fine!

FYI, this a two diferent Logic board. First Logic Board - Boot fine, everything work but I can not get ISCSI to work. Try Diferent SWIN and ISCSI IC with out luck Second Unit - Was working fine, put it away to work on the first unit, now horizontal Jail bars. Any ideas what else to check....in...

I just build 2 new SE/30 Logicboard. 1. Unit machine boot up but dont boot from ISCSI. Floppy Drive working fine. I have swap the SWIN and the ISCSI IC from other 2 damage boards and no luck, 2. It was working fine, put it away to finish the first one, now get Horizontal bards. I remove the ROM...

Thanks! Great SE/30 Logic board Replacement by the way!

Anyone, comments?

Thanks! Will check the lines again!

Yes, but if I am correct, that will give me video artifacts, not the behavior I am getting....

Pictures!

The Recap was done by the owner, trying to get it working for him. I removed all of them and put them back. so far i dont see any issues with them. Continuity check has been done in all of them to verify. No issue so far. Anything else!