Hello, everyone!
I recapped a battery-bombed SE/30 about 4 years ago, replacing all the electrolytic caps with tantalum ones, and got it fully working. Recently I decided to check the Mac and sadly it wasn't booting from the internal scsi drive AND the floppy. Both the hard drive and floppy spin up yet I get the floppy with a question mark. Also, the startup chime is distorted - my guess is I didn't wash the board well enough and somewhere the electrolyte has continued to eat the traces away.
Here are the photos I made during the initial recap before touching the PCB, they show the corrosion near UD8, and UE8 from the leaked C7 and a slightly less affected area near the C8, C9 and C10 next to the SCSI chip. The board took an iso bath after and worked great.
Any ideas on what traces would be the proper starting points on the PCB to check for the culprit? To my understanding, the SCSI/SWIM issue is separate from the sound issue, so I have two areas to check and repair.
I recapped a battery-bombed SE/30 about 4 years ago, replacing all the electrolytic caps with tantalum ones, and got it fully working. Recently I decided to check the Mac and sadly it wasn't booting from the internal scsi drive AND the floppy. Both the hard drive and floppy spin up yet I get the floppy with a question mark. Also, the startup chime is distorted - my guess is I didn't wash the board well enough and somewhere the electrolyte has continued to eat the traces away.
Here are the photos I made during the initial recap before touching the PCB, they show the corrosion near UD8, and UE8 from the leaked C7 and a slightly less affected area near the C8, C9 and C10 next to the SCSI chip. The board took an iso bath after and worked great.
Any ideas on what traces would be the proper starting points on the PCB to check for the culprit? To my understanding, the SCSI/SWIM issue is separate from the sound issue, so I have two areas to check and repair.