Broken Atlantic Research Interview 40A Vintage Computer / Data Analyzer

This is a gadget I found at FreeGeek, a local computer salvage and recycling outfit (https://www.freegeek.org/). It's an Atlantic Research "Interview 40A", Serial Data Analyzer. It's from the late 1970s and was designed to test and troubleshoot serial port connections.

Unfortunately, I can't get the darn thing to work! There's no video either from the on-board CRT or the external video out. The most it will do is power on, show some lights on the front, and occasionally beep at me. If anyone has any ideas for how to revive it, I'd love to hear suggestions!

If I can't bring it back to life, then I might turn this into some kind of cyberdeck. I already have a few ideas along those lines.

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