[78-L] 3 Seconds of Nothing??

[Mark Bardenwerper]

On 9/14/2016 1:36 PM, Dave Burnham wrote:
> I was mastering a set of 78s once of the Grieg Concerto and my playback hit a locked groove. I cleaned the record on my Monks to no avail. I examined the groove under a microscope but could see no obstruction but the groove remained stubbornly locked. Finally, after much more time than I should have spent on this, it dawned on me, (light bulb over my head), that the period of rotation of the locked groove was of a 33 1/3 rpm disk, but I was mastering a 78!  The locked groove was recorded!  It was easy to repair by removing the repeated revolutions but elsewhere on the set there was a skip ahead, (once again as recorded), that couldn't be repaired. Scratch that project!
I once was able to repair a locked groove with a magnifying glass and a 
pin caused by a dig. Did not miss any data. Lucky.

-- 
Mark L. Bardenwerper, Sr.

Technology...thoughtfully, responsibly.

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