One. Welcome to the Forums.
Two. Washing the MLB may have given temporary relief, but the underlying cause has remained. Install the replacement caps soon, being prepared to find more electrolyte goo on the MLB after removal of the faulty caps.
Three. If you have an external SCSI cable for attachment of a peripheral SCSI device (a 'system cable' in Apple's parlance), plug it into the rear SCSI port (DB-25F) of the SE/30, and attach a peripheral device (CN-50F)—such as a CD-ROM drive—to the other end of the cable. Insert a terminator (CN-50M) into the second external port (CN-50F) of the peripheral device. If you have a passthrough external CN-50M/CN-50F terminator, that will do instead of an attached peripheral device.
What you do thereby is terminate the external SCSI daisy-chain of the SE/30. There is but a single SCSI bus in the SE/30, shared between external and internal devices. If you can now boot from the internal HDD you will know that you have a termination problem in the SCSI bus, and that most likely in the HDD. Since you will be opening the SE/30 for the recap. job you can check your configuration of the drive while you are there. What the configuration needs to be depends on the brand of drive and its age, so if the preceding is all gobbledy-gook to you, post the brand, capacity and type(-number) of your HDD. What you have already done with the drive, before or since installation, will be useful information. Because it can flash an activity LED, it may be an original Quantum LPS or ELP drive.
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Two. Washing the MLB may have given temporary relief, but the underlying cause has remained. Install the replacement caps soon, being prepared to find more electrolyte goo on the MLB after removal of the faulty caps.
Three. If you have an external SCSI cable for attachment of a peripheral SCSI device (a 'system cable' in Apple's parlance), plug it into the rear SCSI port (DB-25F) of the SE/30, and attach a peripheral device (CN-50F)—such as a CD-ROM drive—to the other end of the cable. Insert a terminator (CN-50M) into the second external port (CN-50F) of the peripheral device. If you have a passthrough external CN-50M/CN-50F terminator, that will do instead of an attached peripheral device.
What you do thereby is terminate the external SCSI daisy-chain of the SE/30. There is but a single SCSI bus in the SE/30, shared between external and internal devices. If you can now boot from the internal HDD you will know that you have a termination problem in the SCSI bus, and that most likely in the HDD. Since you will be opening the SE/30 for the recap. job you can check your configuration of the drive while you are there. What the configuration needs to be depends on the brand of drive and its age, so if the preceding is all gobbledy-gook to you, post the brand, capacity and type(-number) of your HDD. What you have already done with the drive, before or since installation, will be useful information. Because it can flash an activity LED, it may be an original Quantum LPS or ELP drive.
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