Finished up this week.
Sports a newer 8" coil with waterproof connector, no longer hardwired

Repaired orig. White's Electronics supplied headphones, there was a short within the orig. coiled cable, now has a new coiled cable with connector. Complete headstrap was replaced with one from my Calrads. Rubber ear cups were in excellent shape, just needed rejuvenating.

Defective circuit board replaced with an identical Silver Sabre one. Some parts changes were made to reduce circuit board height as a copper ground EMI plate was added about 1/8" below the circuit board. New toggle switch and waterproof boot. New waterproof boot seal on Disc. control and new knob.

Just needs a new belt strap and buckle and a straight shaft set-up, otherwise ready to go. Bench test performance better than expected.

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I dig it with a Nokta/Makro product.
And then some.. Blisstool V5, White's IDX