M5126 Portable SCSI Boot Issue

[WillJac]

I am working to repair a M5126 backlight Mac Portable. Recapped, repaired a few traces and I have the machine doing a good happy chime but when I connect an external (with power and correct INI file) or an internal bluescsi (portable version) it will still give me a good happy chime and then then the SCSI light will blink once and I get a Sad Mac 0000000F/00000002 error code. I have traced out the RAM logic schematic made by Danny Cellar and found no issues. I have gone over the SCSI, IWM to try find broken traces and other new found. I have tried different SCSI chips where some will not give me the sad Mac error but I get the no boot image found icon instead.

If anyone could have any suggestions to try to solve this problem would be very much appreciated.

Thank you in advance

 

[finkmac]

sounds like a bad or poorly configured scsi emulator. I think I was getting a similar error with the scsi2sd I put in my McPortable..
have you tried with a different scsi emulator? zulu-compatible or scsi2sd?

also try booting from a floppy and seeing if you can format
moreover, check your scsi adapter cable or board.

 

[WillJac]

sounds like a bad or poorly configured scsi emulator. I think I was getting a similar error with the scsi2sd I put in my McPortable..
have you tried with a different scsi emulator? zulu-compatible or scsi2sd?

also try booting from a floppy and seeing if you can format
moreover, check your scsi adapter cable or board.

I use same blueSCSI on another portable same model with no changes to image and it works fine. Both internal and external.

 

[finkmac]

Check here. Again, verify scsi.

 

[WillJac]

Check here. Again, verify scsi.

Thanks for the link, I looked over it but was not so much helpful with my condition. I feel 100% that it is not the scsi device I am adding to the board as both of them work on an identical board with no issues. Still more to try and if any other ideas you have post them.