My Vingcard 4320 is not returning the key cards, they get stuck. I've opened it and done my best to clean it, but still not working

The "loading0S" message on your Vingcard terminal handheld screen means that the terminal is still loading the operating system. This message can appear for a few seconds or for several minutes, depending on the speed of the terminal and the size of the operating system. If the message is still there after several minutes, you may need to contact Vingcard support for assistance.
Here are some possible reasons why the "loading0S" message might be appearing on your Vingcard terminal handheld screen:

• The terminal may not have been properly initialized.
• The operating system may be corrupt.
• The terminal may be low on memory.
• There may be a problem with the terminal's hardware.

If you have tried restarting the terminal and the "loading0S" message is still there, you should contact Vingcard support for assistance. They will be able to help you troubleshoot the problem and determine the best course of action.
Here are some troubleshooting steps you can try before contacting Vingcard support:

• Restart the terminal.
• Check the terminal's power supply.
• Make sure that the terminal is connected to a network.
• Try updating the terminal's firmware.

If you have tried these steps and the "loading0S" message is still there, you should contact Vingcard support.

Some ideas here

https://www.justanswer.com/electronics/bidgd-vingcard-2800-system-will-not-encode-key-tried.html

https://www.google.com/search?q=vingcard+2800+card+reader+says+ioexception

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Seems a lot of issues with that machine

https://www.justanswer.com/electronics/9eecv-master-password-working-vingcard-2800.html

Reset
https://slashersoftware.wordpress.com/2018/05/14/vingcard-2800-troubleshooting/

Information and Videos

https://www.google.com/search?safe=off&rlz=1C1QJDB_enCA643CA644&sxsrf=ALeKk02vO9HfOT9-7ylEfgbVlYGugdUVuA%3A1607447671843&ei=d7TPX8D8MsuZ_QbapqDQAw&q=vingcard+2800+hard+reset

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The best advice is to have it fixed properly. Once these are serviced correctly, they tend to perform like they should. The place that can fix that one is www.camerasandparts.com They do the service for the camera with the repair which is the key to it working the way it should. It's only $79 with them for that service package and it covers parts labor and shipping back. Their the best deal if you need to have a Canon serviced. Their work is as good as it gets for these cameras.

Hi there please follow the steps and let me know the result.
1. Ensure batteries are fully charged & clean the battery connector point in side the battery compartment.
2. Look carefully between the lens and the camera body for any sand, dirt or any damaged etc.
3. Try turning the camera with the lens facing down and shake to dislodge anything stuck
4. Try removing batteries and memory card, wait 5 minutes and refit the battery only.
5. Now turn on camera( with out card ) and see ,if working then fix the memory card & again turn on the camera. If working then fine . Otherwise format the memory card and fix back in camera again & try. Make sure before format the memory card take a back up all photos in your computer then format. If no luck then reset or restore the camera setting by pressing Menu key for 2 sec .. in not done the press both Menu & self time key for 2 - 4 sec.
i hope it will gives you success.

If you have cleaned the fingers in acid you may have to replace the socks on the fingers.

if you are unable to get it the best idea is to take it to a geek squad, or any other computer repair place. they will have to take apart the laptop to get to it most likely. sorry about your problem, and thank you for using fixya!