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I am working on repairing a dot-matrix printer power supply. Last time it was plugged in, it popped the fuse. I got it opened up today and discovered that the AC-to-minus poles of the bridge rectifier are shorted, so I need to replace it. The markings on the package are "LB-154 68B" and the ac...

Continuing with my data-recovery-from-old-tapes project, I have moved on from the DDS1/DDS3 4mm to QIC. I tried plugging in my old DC600A drive, which I think was purchased new in about 1989, and it let out some magic smoke after making an initial attempt to turn motors. I have disemboweled the...

Sometime around 2003 I switched from tape backups to disk based backups, using rsync on Linux with the --link-dest option to share common files between snapshots with hard links, and I still have disk-based backups going back all that way. In order to avoid higher priority tasks, I decided to...