68kMLA Classic Interface

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Bombed SE
Posted by: bibilit on 2023-06-21 02:30:11
I have at home a bombed SE with checkerboard.

A pair of traces have been repaired, but still having the issue.

Are the Bourne filters required in the boot process ? apparently i have no reset and filters are close to the battery and also close to the reste switch.
Posted by: bibilit on 2023-06-24 10:33:51
Answer for myself, never look only at the damaged area, look around also.

After testing only the bombed area, i started poking around, and one trace was looking bad… and was broken, near the CPU !

A quick patch and the checkerboard was gone and i got a chime and flashing floppy.

Was even able to boot from a floppy, still have and issue with the SCSI, but far better.

The SE is a beast.

The metal brace is gone for good, replaced with another though.
Posted by: bibilit on 2023-06-25 09:06:15
Another broken trace under the SCSI chip and the bourne filter !

A quick patch and the SE is fixed.
Posted by: zigzagjoe on 2023-06-25 10:17:40
Nice troubleshooting! That brace is gnarly, it must have been ugly in that machine beforehand.
Posted by: bibilit on 2023-06-25 11:44:03
Thanks.
Yes, was crumbling apart, had a worse SE/30 board to remove the part from.
Posted by: pezter22 on 2023-06-25 16:28:49
Nice work!
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