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Pratt & Whitney Supermic Model B issue

Joined
Apr 6, 2018
supermic.jpg

All,

I have the supermic in the attached picture. The issue is the display is stuck at one value. Hit the reset switch and move the spindle the readout stays at 0. Hit preset and the same issue. Has anyone had this happen or know what to look for? Unplugging did not solve anything. Before i unplugged it the last digit would stay at 1 or 4 while all other numbers would change when i turned the spindle. After unplugging none of the numbers would change with the spindle.

Thank you,

Derik Flairty
 
I want to confirm. You power up the DIGITAL display, you hit reset, the unit reads "0.0000." You cycle the mic head, and nothing happens? If so, most likely you have a dead rotary encoder. Pratt doesn't work on older machines, and quotes a rebuild price. I forget what it was last time we asked, its north of $8000.
 








 
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