Hi,
If you liked using the older machine do try to get it repaired. The older machines are fantastic. I have everything from a n 1899 treadle to a computerized fully loaded machine. I really prefer using the old Singer 401's that I have over all of the others. Piecing I prefer a Singer Featherweight machine the stitch quality is super. I am fortunate in the fact that I have found a local person that will repair my machines. He does a great job. My hope for you is that you are able to find a good machine mechanic. The oldies are definately the goodies. Hope it all works out for you.
Sue