If you have the manual, check for the output voltages for the transformer. It wasn't anything special. You may find a new one with the same output voltages. IRRC, the AR-1500 was able to work from either 120 or 240V. If you know that it will be connected to 120, the search for the transformer should be easier. I may have the manual for that model around. I will look and post any info I have.

Dan