60 cycle "heartbeat" static sound in recording - how to isolate and remove?

[cj.flac]

I have a Tascam DR-40X that I ought to throw in the trash.

Yesterday, I used it in place of my Deity PR-2.
(The Deity's thin plastic inner casing around the battery has cracked, making the positive terminal for one of the battery slots loose and warm to the touch. I may contact Deity for warranty coverage).

The last few times I have tried recording with it, it's introduced a static "ticking" sound pervasive throughout. It's probably emanating from the screen ticking off the seconds. Even if I were to troubleshoot this by setting the screen to turn off after a certain amount of time, that shouldn't be an issue on a field recorder at all, so that's something to contact Tascam support about, too.

In the meantime, here's a sample of what this sounds like. How would I approach removing or mitigating this in something like iZotope?

[robgronotte]

I'm pretty good at using iZotope RX, possibly have used it more than anyone else here, and I don't think that would be fixable with that program.  Highly doubtful that it could even be significantly improved by any program I'm familiar with.  It sounds much worse than I had expected from your description.

[nulldogmas]

Actually, the RX Spectral Repair filter works perfectly on this — use the "partials + noise" tab and it eliminates the clicks completely. You're going to have to select and process each click individually with the time-frequency selection tool, though, so be prepared for a long day at the office.

[EmRR]

Actually, the RX Spectral Repair filter works perfectly on this — use the "partials + noise" tab and it eliminates the clicks completely. You're going to have to select and process each click individually with the time-frequency selection tool, though, so be prepared for a long day at the office.

The 'find similar' option may select most or all of them!