When the machine first arrived, it could not be made to work. It suffered from all sorts of problems from cracking PCBs, to bad resistors, to the packaging of the TI ICs being highly sensitive to humidity. These issues were slowly addressed, and by the summer of 1973 the first programs were able to be run on the system although the results were highly questionable. Starting in June 1975, a concerted four-month effort began that required, among other changes, replacing 110,000 resistors, rewiring parts to fix propagation delay issues, improving filtering in the power supplies, and a further reduction in clock speed to 13 MHz. At the end of this process, the system was finally working properly.