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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!

Just to see if someone have a new Idea! The Behavior, when turning on the power, you can see bright rasters on the monitor, but neither startup bongs nor arrow pointer comes up. Bellow Monitor Image Sample: The logic board has been recap, All F258 had been replaced and all 4816P-001-220...

So the RP9 is a Boruns Inc. 4816P-T02-201 that is imposible to get if you are willing to get 2000 of them. Anyone has try to replace it with 4816P-T02-221LF. The Diference is the is that the Original is 200 Ohms and the new one I am looking is 220 Ohms. Any Suggestions.

Thanks!

Anyone know the Socket Size for the Video Memory on the SE/30

Great news!

CHeck for crack on the soldering point on that connector!

Check/ replace resistor R5 (470K, 1/4 %-watt, 5%). But again, if you still touch the analog board and behavior take place, you have a crack soldering join somewhere.

If you tap it and nothing, I have to agree to check / replace resistor R5 (470K, 1/4 %-watt, 5%).