PCR: Layout was/is blocked for conventional. It is a current ZW 2*180w. Retro-fit is what I am trying to do. All measurements were taken with "magic" bulbs. Measurements before and after installing the Selector were the same.
Russell: V 2 on the test track fluctuated between 4 and 7, mostly 4s. I swapped V 1 and V 2 out as well as swapping the input channels. The problem stays with TIU's V 2.
The question of repair versus buying another TIU is why I started this thread. On that I am undecided.