cRio Power Light Not Turning on and no Activity

[Al Skierkiewicz]

Morton,
On the off chance that a Crio module has taken a hike, try removing all of them and then repower the Crio. This has been asked earlier but you did not respond. Are you measuring 24 volts at the input connector of the Crio with the Crio connected?

I would be remiss if I did not take this opportunity to remind everyone that the Crio chassis/enclosure is tied to the negative lead of the battery. If hard mounted to the robot frame, the frame is now connected to the battery. Under FRC rules this is not allowed. When building your robot this season, remember to insulate both the Crio chassis and the camera if you use one.

[CaptainKemp]

I have checked the voltage drop across the connector to the cRIO and it was 24V.

When I get a chance today I will go through and try your idea of removing all the modules. Thanks Al.

Just to let everyone know. I will probably be sending the cRIO into NI soon so that I will have it working by the time we need it in build season.

Thanks for all of your help

[jtus]

We had the same problem. Just call NI and get a RMA number and send it to them. They returned it in less than two weeks repaired free of charge. GREAT SERVICE.

[Al Skierkiewicz]

Morton,
As pointed out earlier, an RMA is needed for returns. The sooner the better as things will heat up after kickoff.

[kamocat]

Their number is:
(866) 511-6285
from 7 a.m. to 7 p.m. Central Time.

I got that from going to http://ni.com/first and clicking on the FRC logo.

[PingPongPerson]

My team had a problem last year with the cRIO getting zapped due to a faulty connection sending 12V through our chassis. It's unlikely that this happened to you, but it is a good reminder to insulate the cRIO.

[Mike Copioli]

We had the same issue with one of our spare CRIO's. It in fact was the fuse. This crio was being used on our practice robot. We did not have time to wait for the RMA process, which BTW is very fast, so I decided to repair it myself. I do NOT recommend attempting this yourself as it will most likely void any warranty and is certainly in violation of the rules. Since this unit was only being used on the practice bot it did not matter. After opening the cRIO and observing the blizzard of debris that fell to the floor, I located a small surface mount fuse (1206 apx.) located near the power connector. I do not remember the ref. designator of the fuse but it is F?. Using a multimeter I tested the continuity of the fuse and verified that is was open. I replaced the fuse with a 2 amp slow-blow in that same package. I reassembled the unit this time WITH the optional rubber gasket kit. The cRIO is now working fine.

Once agian I do not recommend doing this but we needed it now.