RCA WV-97A Senior VoltOhmyst VTVM

How the heck do you get in to work on a WV-97A?

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I’m also working on some Heathkit VTVMs – an IM-11, IM-13, and an IM-28. For these, it was easy to drop everything from the front panel and thus gain access to the range and function switches and their associated components.

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But on the WV-97A, I had to start desoldering connections just to get the range switch disengaged from the front panel. I still can’t reach most of the components. What’s the secret to working on these?


Well, I had thought the chassis was spot-welded to the front panel, but as soon as I removed the control nuts for the DC Zero and Ohms Adjust, the chassis dropped away.

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© Steve Byan 2011-2019