Quoted from 72Devilz:

I recently came across this Whirlwind along with a Taxi and Pinbot at an elderly customers house when I was doing some electrical work. We struck up conversation and I offered my services to get them operational again. They haven’t been serviced since the 90’s and are in need of rubber and a good cleaning. As I was opening the back boxes to check the for battery leak issues the Whirlwind which was less than 6” away from a leaking skylight had the most severe damage and the battery holder just came right off the board in my hand. The two other machines were lucky to not have any damage other than bad battery holders. My customer told me that the Whirlwind never got much play because the rules were hard to follow particularly for his grandchildren and asked me if I wanted to buy it and I was not hesitant to make him an offer which was fair to us both, he is also hiring me to work on his other two machines in partial trade, he tossed in the Silverball backglass for free as well. After I got the machine home I immediately pulled the MPU, addressed the acid damage with vinegar and paint brushes to which I was able to remove with minimal damage left. Luckily the board traces didn’t suffer exposure and other than one bad lamp diode, a bad flasher drive transistor and one display segment out the MPU boots and the machine plays. Tear down and cleaning was fun, all the ramps and inaccessible parts of the playfield were covered in a layer of fine black dust. Now I wait for replacement parts and LEDs then I can get this one put back together.
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