I do have the extended controls. I can not access manual WB from the extended controls. The "menu" button does not function. I was told this when I had the housing adapted to my HDR-HC1.
I had the mini-USVH for my old TRV30. I bought the HDR-HC1 based on the measurements I found on the net and an "educated" hope that it would fit and function. I also had numerous conversations with Warren (the owner) before I bought the camera.
I preordered the camera. The day I received it, I discovered that it did fit in the housing (absolutely perfectly with no room to spare anywhere), but that the controls did not all work (as Warren told me to suspect.) I shipped the camera and housing to him. He changed out the chip, fabricated a new video out plug, and FedExed it back to me two days after he received it and two days before I left for Tonga.
Since my computer crashed after I returned home, I still haven't had time to edit or even really look at the footage I got. I did view a lot of it on the camera's LCD.
Warren says that WB cannot be accessed via the Lanc for any Sony camera with touch screen WB control. He says he is very leary of anyone who claims otherwise, but he is still investigating. He says he will believe it when he sees it.
As to the auto WB... The camera does do a fine tune WB adjustment upon power up or battery change. However, it does not do a "real" WB. I tried removing the battery for a while, putting the red filter on the port, reinstalling the battery, and powering up while pointing toward a while wall. After doing this (above water obviously), the image had a strong red tint. I then accesed WB via the touch screem and pushed "instant WB" (or whatever Sony calls it). The redness immediately went away and the image was correctly WBed even though the red filter was still in place.
For all you guys who say that Amphibico can WB via the Lanc, have you actually seen this work or are you going by what they have told you? It sure would be great if it can be done. I'm sure Warren will retrofit my controls if it can be done.