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Interesting results so far – the fact that the MCL2AV AUX socket connection allowed control was useful, but I too don’t understand why there was no sound. I thought that pins 1 and 4 always output the sound from MCL2AV.
My gear is put away at the moment so I think it will be next week before I am able to try anything similar (with a known working MCL2AV), but until then I will be following with interest!
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There’s often compatibility problems between older phones and newer PSTNs.
Here’s a compatibility table that Keith has produced in the past:
(A ‘X’ means that it works, but you have to read the footnotes)
And this from the Beocom 5 manual:
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I have just been reading through the rest of this thread – some great detective work! The requirement for pins 3, 5 and 7 to be connected is indeed strange!
One thing to note from this test is that the BM5500 is the only product where I have found that the data pins in the Aux connector and the MCL speaker connector are connected internally in the Beomaster, so the result of this test might not be the same with other audiomasters.
I think BC9500 is the same (TV AUX pin 6 connected to MCL speakers). So the data going over an MCL system is Audio Aux Link (AAL).
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thanks for the input. Is it mentioned in a manual or guide somewhere? The reason for asking this is if this is for a connection with Masterlink or Powerlink?
I have linked to a PeterPan thread before that had the following note under a post about BL3500 and Wireless 1 – perhaps this accounts for the Option 0 setting (when using the first version of Wireless 1):
NOTE
The combination Wierless 1, version no. 1780 and BeoLab 3500 version no. 1601 must not be connected to a separate IR-Sensor, here the IR sensor that is built into BeoLab 3500 works.
Installation of a separate IR-Sensor therefore only applies to the first version of Wireless 1.
Here’s the thread (I used google translate – 3 Mar post refers): https://www.hifi4all.dk/forum/forum_posts.asp?TID=20679&PN=1&TPN=149#top
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The powerlink data pins also has connection to this transistor, on the line going out to the left side of the diagram.
That was well spotted – I took a while to find that link even after you had explained it! It does add an extra level of complexity o-if third-party devices (like the Almondo) are added to the datalink/powerlink setup, and I am not surprised that it can present problems in some circumstances.
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I vaguely recall the key to access the inner memory setup features on theBV tv’s is menu 0, 0 go,
Service Mode is indeed accessed by going to a SETUP menu and then pressing 0 0 GO
But the DVI socket is usually selected by simply pressing PC on the Beo4. I doubt that it has been disabled due to the previous hotel use, so I would definitely try this first.
You may have to add PC to the LIST button on the Beo4.
EDIT: As you are a GOLD member, you will be able to view the Service Manual on site – there is some useful info about service mode. Try not to muck up any settings – it is often best to take a photo of the screen before changing anything!
BV6-26 Manuals are here: https://beoworld.org/manuals_view.asp?pid=549
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No problem – happy to help and good luck with the fix. I hope it resolves the problem! ?
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Which one to choose?
Service manual states BC547B
And for the diode it states: 1N4148
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Not sure if I should look into that at some point.
That would make sense – those components connect to the TV/AUX AAL data (pin 6) which would explain why the rest of your datalink (between BS7000 products) is working fine.
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I checked for continity on all pins.
Maybe check for continuity between pin 1 and 6 – these are next to each other. These carry the left channel and AAL data respectively, hence if they are touching (inside the solder side of the din plug) it would possibly give some of the symptoms that you have described earlier (eg lack of data and left channel).
(Picture is viewing pins – looking into plug)
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I know that the 7-pin datalink cable is new but perhaps it is faulty – not unheard of! Does the behaviour change if you reverse the cable?
Alternatively you could try connecting a 5 pin din between the BM7000 and BL1611, and then see if you can simply listen to the (already playing) BM7000 by selecting any audio source on the BL3500.
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Sorry I meant to re-do the option settings with the whole system connected to the mains. I think sometimes messages have to be passed between products as you do the Option settings.
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Sorry to ask, but was the aux cable in the BL1611’s AAL socket, not Powerlink?
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I guess this points to a problem with my BM7000 then?
Possibly.
Have you tried powering down everything (disconnecting power), then re-connecting and re-doing the Option settings on both BM7000 and BL3500? Try BM7000 in A.OPT 1 and BL3500 in L.OPT 6.
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I tried option 6. It turns on for a second and then turns off. I wonder if there could be a fault on the BL3500.
From my testing with a BL3500, it will turn on and then off if it cannot find the source that you have selected, or if that source is simply not available on the ML network. Having said that, if you disconnect the BM7000 aux cable, the BL1611 should act as an audio or videomaster like in the diagram above, and the BL3500 should turn on with any Video or Audio selection.
Can you try a different ML cable, or test that one elsewhere?
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Hmmm I am running out of ideas!
Is the Converter definately the BL1611 version? – the BL1614 will not work.
Have you tried the BL3500 in L.OPT 6 – that’s the default and works in most setups. I am not sure if you can put the BM7000 in A.OPT 0 while you try this, unless you can temporarily move the BL3500 to another room.
If you have tested the Aux and ML cable elsewhere, you could do a test of the ML/BL3500 part of the system by setting it up as explored in this thread (page 4 onwards): https://forum.beoworld.org/forums/topic/beolab-3500-and-1611-converter-settings/page/4/
If you have the right cables, you could test in accordance with matador’s excellent diagram:
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Okay, have you checked if ML is switched on in the BL3500?
Press MENU MENU 0 9 GO then use the up/down arrows to make sure ML-ON is selected. Once selected, power down the BL3500 and remove the mains for a few seconds then re-connect.
(If your BL3500 is an early SW version, you may only need to press MENU once).
If that doesn’t work, check the serial number of your BL3500? If it’s lower than 10552474 then pins 4 and 12 must be short circuited in the ML socket of the BL3500.)
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ok so the conclusion on the 1615 based on your tests must be that it will only work with a Beovision with datalink I guess.
Yes I suppose that both the BL1615’s AAL socket and the MCL2AV’s AUX/TV socket are expecting to communicate directly with a TV, hence cannot pass commands to each other.
It’s a shame that the stand-alone BL1615 can’t be used to extract the audio from masterlink. Looking at the circuit diagram, there seems to be a couple of points where the ML ON/OFF could be by-passed, but I think that the TV would still need some sort of data command to turn its ML output on (even when the TV is already turned on).
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which commands did you use? With the 1611+MCL2AV combination it was the AV+Video source command or shift+radio+1 that made the sound from the tv come to the MCL2AV
I was mostly trying AV-TV*, but have just tried shift-radio-1 and that doesn’t work either, even if the TV is already on. AV-TV does turn the MCL2AV on (the sensor LED goes out) but the TV does not react either from standby or when already on.
*EDIT: I tried all other audio/video commands also!
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