ProChrono chronograph is going crazy

[Samoht Retsar]

In 2014 and 2015, I had excellent results with my ProChrono chronograph (with the competition electronics indoor light system because I shoot from inside my pole barn to a target area outside). Confession: I keep the chronograph in the pole barn over winter ... where it's covered/sheltered, but temps do get below zero ... then I replace the 9-volt battery come spring. It worked fine in 2015 after one such winter. But my first time using it in 2016, I got wildly erratic readings -- a few reasonable readings (for the 9mm Luger handloads I was testing) ... but mostly missed readings ... plus a lot of crazy high (2,000 and 3,000 fps) readings. Is there some fixable/replaceable component that could have been hurt from freezing? Or is a 2-year life for a chronograph about all I should expect?

 

[JohnKielly]

No chance something has relieved itself on the skyscreens?

 

[Samoht Retsar]

No chance something has relieved itself on the skyscreens?

That's a fair question given my seemingly lackadaisical winter storage method (or lack thereof). But the answer is "No"! I keep the whole thing covered except when it's being used. So, not a speck of bird, bat, mouse, rat, or even a fly's fecal matter on my baby!

 

[Barlow]

Not an answer for you, but I have had mine for at least 6 years, and not one problem. Knock on wood. Barlow

 

[boltfluter]

Does this have an LED screen that could have frozen? Electronics do not like extremes in temp in either direction. FYI.

Paul

 

[Samoht Retsar]

Does this have an LED screen that could have frozen? Electronics do not like extremes in temp in either direction. FYI.

Paul

Thanks for your effort to come up with some rational explanation. However, that's not the problem. The LED works fine ... it changes from shot to shot (except when the chrony doesn't detect/register a shot).