Cold crony.

Its the crony that folds up into a box.
The "Shooting Chrony". Those are particularly sensitive to lighting (unless you've got the light kit, or some facsimile thereof). I suspect a change in lighting is probably what really made the difference. In most cases a short or open circuit would either shut off the chronograph or produce the "Err" result.

GsT
 
Just kinka weird? OK shot over the crony in the summer no prob. So i go out in the garage 35 to 40 degrees and keep getting errors.So take it in the house for a couple hours and works fine.Any hoot ,somen to think about?
Same poop happened to me with my dlx pro chrono,
ended up sending back to dlx guys
they checked it and said
there was nothing wrong with the chrono,
but they sending me new one under warranty anyway,
but they also recommended to use their ir light kit for indoor use only!!!
 
Ok guys,
the infrared light kit came in and tested it inside with regular lights on and also took it out to test the dlx with light kit into the low winter sun light and works like it should.
the bloody powering of the light kit is an extra hassle but reading every shot makes it worth while.
i don’t know what magic fkry these tiny lights do but they make the chrony work.

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