[cmccuist]

This is an old thread, but maybe someone can weigh in. I just bought a Square Wave 275. The guy was basically giving it away as the PC board was bad. The repair shop I took it to said it's about a $500 repair.

This unit has an adjustable post flow feature (also controls the cooling, if installed). That really surprised me as that was one of the complaints about the Square Wave - no adjustability on the argon post flow timing! I think I can get this repaired and have a really great, reliable machine for many years.

There are companies where you send your board to them and they troubleshoot and repair it. Anyone have any experience with this type of repair?