I don't have any U2000, but I have a bunch of U5000 which is it's ugly brother. As far as I know, the boards look extremely similar (and looking at the picture of the U2000 I can't see a difference). You may have a U5000. But, either way the monitor is in protect. These boards can be a troubleshooting nightmare. If it is just the HOT then yes, you can just de-solder it and put a new one in. Even if the HOT is bad it may have other component failures. I buy my components at a local store, so I can't help with buying online. I don't know if the U2000 HOT is the same(I'm pretty sure it is), but the U5000 HOT is a C3686 (it may be listed as a 2SC3686... same thing). I buy mostly NTE parts. It crosses to an NTE2324. If you have a U5000 you may want to stock up on these if you plan on keeping it.