I appreciate the replies and links. However, am already aware Emachines sells replacement PSU's and the PSU needs to fit, etc. But am not impressed with their price/quality ratio. What I would like to do is replace the failed PSU with a better one, say an Antec for example, with a better price/quality ratio.
So maybe a better question should have been, has anyone replaced the PSU in a Emachines T1600 with a "non-Emachines" brand?