It would be rare for a 6100 transformer to fail without another issue being present (dead driver box). Are you sure it is only the transformer? Please check the model number on your transformer, you may have a 6000, same 6100.10 motor but with a 7210.202 transformer, this smaller transformer can indeed fail if the pump is jammed for awhile. We have 7210.202 new (3 in stock), I have only a single used 7410.602 (6100 transformer). These are no longer made so we only have what we have.