I’m sorry to hear about the accident; that sounds awful.
Here are some general things that you might want to check:
* Make sure that the vertical pen slide still moves freely, and doesn’t feel overly loose.
* Check that the XY carriages feel solid, and don’t rock like there is slop when you try to move them.
* With power off, slowly slide the carriage in X, then Y, then -X, then -Y, in a full rectangle over the full area of travel. Doing so, make sure that it feels like a smooth rectangle without a big bump anywhere.
* Check the USB and power connector, and make sure that they aren’t loose on the control board.
If all of that looks good, you’re likely in great shape to keep on plotting. If you find anything suspicious, let us know, and we’ll help you get it fixed.
If any repair parts should be needed, they are indeed available.