I am currently looking at buying a 2004 dynasty 200dx that was used in a late model race shop. The main board has been replaced with about 5 hrs on new one, also comes with another spare board. I have a lot of time with the dynasty 300dx with tig runner. It had been a few years (2009) since i used a new 200dx air cooled. loved that machine other than the torch seeming hot. Just curious what probelms the older machines may have compared to the later updated model. I was planning on purchasing new this spring however the price is right on this used machine ($2000) Any additional info I can get would be very helpful.

Thanks, Tony