Yes, I disconnected the PL lead between BM7000 and Pentas. The TV’s standby light does not flash at all when setting V.OPT 2. So something else is off, apparently, since the same thing happens again, as before I connected the BM to the BV. I had the 1614 apart last time I tried to solve this, and it looks OK.

Can I draw the conclusion that something is wrong with the BV7? It has a HDMI converter... oldish...

Have you tried a different Masterlink lead between BL1614 and the TV? If possible replace and then try option setting again.  Also try setting the TV's V.OPT with no masterlink connected - it should still respond - try changing between V.OPT 1 and V.OPT 2 (leave it in the latter setting).

And check inside all masterlink sockets for any fluff or debris that could make for a poor connection.

Thank you! I will do that next week. Till then, have a good weekend and stay tuned!

So, here is the situation, so far:

I loosened the Masterlink from the 1614 and tried it in the 3500 socket. No sound.

I have acquired a teleplug to DIN from Steve, and have tried this with my phone and with my ipad. The phone plays on its own speaker, while the Ipad goes silent. Nothin comes out of the 3500.

Also, I checked the aftermarket Masterlink that was installed to join the 3500 to the system, using a Fluke 115 multimeter.2 and 3 do not beep against anything at the other end of the cable. 1 beeps against green and green-white

11 beeps against blue

12 does not beep against any of the leads in the other end of the cable

13 beeps against orange-white

14 beeps against orange

15 beeps against red-white

16 beeps against red

The Beomaster still needs to be connected to the the first Penta for any sound to emerge from them. The Beomaster and the 3500 respond to OPTION, by showing the number. The Beovision does not.

link

I have acquired a teleplug to DIN from Steve, and have tried this with my phone and with my ipad. The phone plays on its own speaker, while the Ipad goes silent. Nothin comes out of the 3500.

Is this cable specific made to the Beolab 3500? If it is s Beolab 3500 MK1 the pinout in the DIN connection is different. Also to activate this input on the Beolab 3500 you will need to press Menu + 0 + 4 + GO

link

2 and 3 do not beep against anything at the other end of the cable. 1 beeps against green and green-white

Pin 1 should only be connected to the White/green wire Pin 2 Should be connected to the green wire Pin 3 should be connected to White/blue

I had a good signal, meaning that the 3500 showed time on the display, after I tested the wiring thouroughly, but still no sound. Then I got a 1611 connection box instead of the 1614, but before I replaced that, I moved the 3500from one place in the room to another, and contact was lost. Again. It has been suggested that the little white joining boxes could be replaced with e.g. RJ45 CAT6 Pass Through, for better stability.

Thanks Madskp! But I did test the kablage, and it was end-to-end perfect. The thing is, I have to run the cable through the ceiling, throught the attic, and then down through the kitchen ceiling, so I would have to enlarge the holes in the ceiling in both the main room, and in the kitchen. Tomorrow we leave for a forthnight in Europe, so I will have time to mull over this. I do not know wheter this https://www.amazon.se/gp/product/B09MQQR5LQ/ref=ox_sc_act_title_2?smid=A326X3AG3XUTK4&th=1 would help, since the cabling seems OK?