Chrony has Gremlins..

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badger5th

badger5th

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Jun 25, 2022
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Something bizzare has just started happening with my Caldwell Ballistic Precision Chrony. Been using it in my basement 10m range for several months. Starting today the data readout started going wild going from 0-9999 fps in seeming random numbers serveral times per second. Was also recording several data points a second to my phone connected by the cable. No changes in the lighting, originally replaced the LED bulb over the shooting table with an incandescent and using the DC powered LED screens. I didn't hit with any pellets and it and it hasn't fallen over so no physical damage. Fresh battery.

Anyone had this happen with yours and were you able to fix it? Regards.
 
Make sure there's no dust on the sensors. If there's slot s and the sensors are recessed down in the body, clean them with a swab. I don't have this make/model so I'm generalizing. Refreshing dirty switch contacts by taking the battery out and switching it back and forth a bunch of times is a very good idea on electrical equipment. Same for any connectors - they get a layer of oxide on the contact pins even when sitting still. Just like how it causes trouble on old engines. Go inside and refresh every connector (unplug and re-plug 5 to 10 times) you can find on the circuit board or between circuit board and sensors. Most modern electronics uses connection jumpers and refreshing pin contacts can do amazing things. Hopefully it's not the ribbon connector in the LCD display. Those can have very delicate connectors also and may need refreshing.
 
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dizzums said:
make sure you got a good battery to .. imo any engineer that designs anything to use a 9v battery should be tarred and feathered lol ...
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my https://competitionelectronics.com/ uses a 9v battery and has room to store an extra battery. This enables a user to take the chronograph into the field where there is no 120 volt source. the light bar is 120 volt for indoor use
I replaced my Caldwell with the ProChrony from https://competitionelectronics.com/
problem child fixed :):cool:,,, but I still use the tripod that came with my caldwell,, cheap tripod but it holds my Pro

Yes buy good batteries
 
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Feinwerk said:
Make sure there's no dust on the sensors. If there's slot s and the sensors are recessed down in the body, clean them with a swab. I don't have this make/model so I'm generalizing. Refreshing dirty switch contacts by taking the battery out and switching it back and forth a bunch of times is a very good idea on electrical equipment.
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The unit is only 4 months old and has been in a conditioned basement so I doubt that is the issue. I had it apart about a month ago and didn't see any duct or anything else that looked out of order.
 
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I don't know how to fix your Caldwell but I have no desire for a conventional chronograph after getting a couple inexpensive Chinese ones. I prefer the little one that can mount to a tripod because I can use it while shooting groups. One would be a good backup. They don't require visible light and I get a lot less missed shots than I used to get with my "shooting Chrony". Rechargable batteries too so you don't have that expense either.
 
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sb327 said:
+1 on the switch. I have the same model and it does some crazy crap if I get it in a certain spot. There is only one spot it works correctly so I just taped over the switch so it stays on and remove battery to turn off.

Mine is about 6 mths old

Dave
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OK, I'll try that. BTW issues has not recurred since I initially posted this thread.
 
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JimD said:
I don't know how to fix your Caldwell but I have no desire for a conventional chronograph after getting a couple inexpensive Chinese ones. I prefer the little one that can mount to a tripod because I can use it while shooting groups. One would be a good backup. They don't require visible light and I get a lot less missed shots than I used to get with my "shooting Chrony". Rechargable batteries too so you don't have that expense either.
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Mine seems to be working normally now. I may still get one of the smaller ones for portable use.
 
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