Hello everybody...
I too, own a Harmon Kardon T55C and will be joining WGH with the Van Alstine PS mod.
I had contacted Wayne and told him a screwdriver on the deck of my T55C with my ear on the handle (to act as a poor mans stethoscope) and I heard "electronic squealing" that I thought was coming from the speed controller card. Wayne indicated no such sounds on his deck, so I removed the bottom cover and discovered the ground wire going to the motor was completely disconnected! I soldered it back on, tried the poor mans stethoscope again, and the electronic squeals were gone. Now I could hear the motor whirling, which had been obscured previously.
So, very much looking forward to the outboard PS mod and the rich rewards it is said to bring to this fine suspended, ultra low mass arm table.
Thank you Frank for dreaming up the the Mod, for writing the description, and thank you to Wayne for his picture page that really got me interested in doing the mod.
Parts are ordered, can't wait!!