What is used for a replacement power cord on a Wallensak 1520AV? The lower pin on this recorder is grounded. Any help will be appreciated. Thanks, Bob

Unless I misunderstand your post, the AC jack is a three-wire (AC line + ground) arrangement, that has an oddball form factor.

Usually, when the connector is really weird (read "unobtainium") I'll look in the Mouser catalog, and order a modern three-wire jack and corresponding three-wire cord. It takes a little machine work, but in the end it is a lot safer than using some 40-plus-year-old cord I find on eBay.

NOTE: When I do this, I use machine screws with nuts and lock-washers to hold the new jack onto the chassis. I do not use self-tapping machine screws, as they can rip loose under stress. I use locking compound on the nuts. I'm very concerned that under heavy stress that my new jack assembly not come loose. Sometimes I augment the screws with JB Weld.

Fred
owner
Classic Audio Repair

The Wollensak T1500 series are classic recorders and can be seen in movies. Keep looking.

The same type of power cord was used on some office machines in the 50's and 60's. They are not impossible to find, but of course when you need one then it will seem like it takes forever. I have found them from time to time in boxes of assorted cords at flea markets or in thrift stores.