I knew it , the wife went to the shop and wasn't as long as expected , I had a Penta in the middle of the door and low and behold she walked into it " What's that doing here " . Before she could get to the rolling pin I explained I was experimenting .
Anyway , no display , I have a Bs7000 MLed to the 7-40 ( all speakers connected to the Tv ) and put the powerlink cable into the 7000 to prove the display and it worked . Like Peter said if you connect a Bl3500 you get data so why no show with Penta's .
Richard