[Guy]

Madskp wrote:

I cant find any mention og them in the service manual. trying to analyse a little about it: At J1 on the diagram Option 5/6 there is a dash over 5. Coild that mean option 5 if connected and option 6 is broken? However according to the Older MCL manual option 5 and is programable via remote. Could make sense if used without IR eye of course. But what does option tv on J4 mean then?

I am not at all sure about any of this – but I don’t think it has anything to do with the mute problem.

I did, however, find this in the MCL Handbook Troubleshooting Guide:

I think the type label is inside the back cover – any idea what type yours are? Of course, it was only valid when written hence I would suspect that later transceiver versions may well work!

EDIT: You have already mentioned all this and said earlier that yours are Type 2027 – sorry I forgot!

EDIT: I just checked and the one connected to my MCL2AV is a Type 2046 and seems to work fine!

[Madskp]

Guy wrote:

I am not at all sure about any of this – but I don’t think it has anything to do with the mute problem.

No I don’t think so either. It was just something that could be of interest to the overall functionality of the MCL2AV.

Guy wrote:

I did, however, find this in the MCL Handbook Troubleshooting Guide: I think the type label is inside the back cover – any idea what type yours are? Of course, it was only valid when written hence I would suspect that later transceiver versions may well work! EDIT: I just checked and the one connected to my MCL2AV is a Type 2046 and seems to work fine!

Ok interesting and could makes sense. But there might be some confusion in the numbering. In the servicemanual the MCL2A is called type 2046 with transceiver type 2021. No trancivever is mentioned for the MCL2AV, but there is a separate section for the tranceiver type 2021.

The one I got with the MCL2AV has type 2047, Serial 08412681, SW 2.0.

The other one is missing the shield with the badge, but has a number on the cardboard inlay which could be a serial number: 8920215.

We might be going down a deep rabbit hole here…..

 

[Guy]

Madskp wrote:

We might be going down a deep rabbit hole here…..

I agree!

Have you tried putting the MCL2AV in MCL2A mode (by holding down the TIMER button and pressing RESET (SHIFT MUTE) on the BL1000? If I do this with mine, then use SHIFT RADIO 6 to turn it on, the LED stays on and no sound comes out of the PL speaker. However, pressing the sensor’s MUTE button I can hear the MCL2AV’s relay clicking on and off. Perhaps this works for your mute button?

I have then put the MCL2AV back in ‘2AV’ mode by holding down TIMER and pressing AV.

[Madskp]

Guy wrote:

Madskp wrote:

We might be going down a deep rabbit hole here…..

I agree! Have you tried putting the MCL2AV in MCL2A mode (by holding down the TIMER button and pressing RESET (SHIFT MUTE) on the BL1000? If I do this with mine, then use SHIFT RADIO 6 to turn it on, the LED stays on and no sound comes out of the PL speaker. However, pressing the sensor’s MUTE button I can hear the MCL2AV’s relay clicking on and off. Perhaps this works for your mute button? I have then put the MCL2AV back in ‘2AV’ mode by holding down TIMER and pressing AV.

Oh yeah that could be a good way to test it. Will try that tomorrow

[Madskp]

To add to the confussion I just found this picture of a MCL2A on ebay with the same type number as my tranciever

[Madskp]

Madskp wrote:

I will try to reverse the modification and try it again.

OK, so I got the modification reversed (I hope). I t was not just added components and wires but also cut traces on the PCB, but luckily I got the reference IR board to look at and the PCB is fairly simple to overview.

It is working now though sometimes a little unstable, but also on this one the mute button is not working. I wonder if it’s something on the MCL2AV that is actually not working.

Madskp wrote:

When I had the BM5500 connected I also med the connection from the MCL2Av to the 1611 and BC6, and control of the BM5500 sources from the BC6 works fine through all these connections

I did one more experiment with this setup. I removed the speakerlink cable that carries data so only right channel connected from BM5500 to MCL2AV. Started the radio on the BM5500, and the tried to activate the MCL2AV with different audio commands. Both Radio, CD, Phone and Link A.tape (I still have the Beocord 3500 directly connected to the MCL2AV) would open the sound input from the MCL connection. So it looks like the MCL2AV when receiving and audio command will use 5-10 seconds to look if this source is available locally with datalink, and if not open the MCL connection, regardless of the source being available at the other end.

Guy wrote:
Madskp wrote: @Guy: One thing I don’t think you have tested is how the reaction to an AV + Video source command is from the BL3500 when connected to the 1611 and MCL2AV? Does it just open the video source on the 1611? Just tried that now (with no IR sensor on MCL2AV): BL3500 in Option 2 or 6: Behaves exactly as when selecting TV etc without AV first. Just opens the video source on the 1611.

I did some experimentation myself regarding this matter, and for one thing it might actually be the shift + radio + 1 (or A.AUX +1 on BEO4) command that should be used for this proposed scenario.

I tried to make a split cable connected to the MCL2AV’s AUX port and the 1611 and an iphone as input on the aux port. I got very mixed results, but 1 or 2 times I actually managed to get sound from the iphone connected to the AUX port back via the AUX port out to the 1611 and BC6. But i was very inconsistent regardless of option settings. I wonder if this is at all possible

[Guy]

Yes I think we should ignore the transceiver numbers from now on! Mine are all 2046 or 2047, but all show SW2.0 so let’s suppose they all work the same with MCL2AV (except 2045).

Madskp wrote:

Ok, tried this now with both of the IR eye’s and the MCL2AV being stand alone or connected to the 1611 and the BC6. No way in any case will it respond to the timer + reset command or timer + AV for that matter. so no wiser on this matter. Of course my MCL2AV arrived with defects, so it might as well have other defects.

I just tried removing the transceiver grey and/or yellow connectors to my MCL2av to see if I could replicate your mute fault. It works fully with grey and/or yellow disconnected – I just lose the ability to store start up volume (and it starts quietly each time). With those wires disconnected there is continuity between the grey and yellow terminals as shown on the circuit diagram.

Given that your other MCL2AV fault was a 5v supply problem, and the muting circuit seems to use a 5v supply, perhaps whatever damaged TR13 also damaged TR100? Perhaps someone connected an incorrect power supply (or incorrect polarity) in the past.

[Madskp]

Guy wrote:

Given that your other MCL2AV fault was a 5v supply problem, and the muting circuit seems to use a 5v supply, perhaps whatever damaged TR13 also damaged TR100? Perhaps someone connected an incorrect power supply (or incorrect polarity) in the past.

I’m almost about to call you dr. diagnoses. When you mentinoed this it made me remember that in one of my first tires to fix the power part of it I suspected TR12 at first, and tried to exchange it with TR101 as it was the same type and had not to do with power supply.

Luckily I bought a supply of this type of transistor (BC848B) when I bought the replacement for TR13, if there was other faults.

I have replaced TR101, and also Tr100 as it actually had an old repair with some wire to fix a broken trace. I’m not sure if it made a difference yet, as I didn’t get the remote with me from the attic earlier and the little one is sleeping in the room below, so I can’t get it tonight.

One thing I noticed though is that the relay is clicking every time I move the unit just a little bit. I haven’t thought about that before, so it might also have done it before but the unit was always laying still when powered on. I might have to look in to that one of the comming days. Could be a loose connection of some kind

[Madskp]

Guy wrote:

Have you tried putting the MCL2AV in MCL2A mode (by holding down the TIMER button and pressing RESET (SHIFT MUTE) on the BL1000? If I do this with mine, then use SHIFT RADIO 6 to turn it on, the LED stays on and no sound comes out of the PL speaker. However, pressing the sensor’s MUTE button I can hear the MCL2AV’s relay clicking on and off. Perhaps this works for your mute button? I have then put the MCL2AV back in ‘2AV’ mode by holding down TIMER and pressing AV.Oh yeah that could be a good way to test it.

Ok, tried this now with both of the IR eye’s and the MCL2AV being stand alone or connected to the 1611 and the BC6. No way in any case will it respond to the timer + reset command or timer + AV for that matter. so no wiser on this matter. Of course my MCL2AV arrived with defects, so it might as well have other defects.

Regarding the numbering of the trancievers i found this in the MCL handbook:

It seems that the MCL2Axxx and corrosponding tranciever i named with the same type numbers (2045, 2046, 2047). So when the text says that the tranciever for the MCL2AV is the same as on the MCL 2ABLI then the type number shouldn’t matter, unless of course it’s type 2045 as mentioned in the troubleshooting section.

 

[Madskp]

Guy wrote:

Madskp wrote:

One thing I noticed though is that the relay is clicking every time I move the unit just a little bit. I haven’t thought about that before, so it might also have done it before but the unit was always laying still when powered on. I might have to look in to that one of the comming days. Could be a loose connection of some kind

Yes my relay only clicks (twice about a second apart) when I power up the MCL2AV.

mine does start with the two clicks, so something is right. Ill have to check for loose connections

[Madskp]

Guy wrote:

On that note, when doing a Google search for B&O information I think I am seeing less ‘Beoworld’ hits than before. Perhaps this is related to the new forum?

I just remembered this, and here is my input. I have a feeling that the most google hits I get from Beoworld forums is from the old 2007-2012 forum.

[Guy]

Madskp wrote:

One thing I noticed though is that the relay is clicking every time I move the unit just a little bit. I haven’t thought about that before, so it might also have done it before but the unit was always laying still when powered on. I might have to look in to that one of the comming days. Could be a loose connection of some kind

Yes my relay only clicks (twice about a second apart) when I power up the MCL2AV.

[Madskp]

Ok, its something in the screw terminal for the connection of the tranciever, so it makes sense that it would loose connection every time I moved it a little. Still not perfect connection, but good enough that I could test that the Timer + reset / Timer + Av now works and the mute relay clicks when pressing the mute button in MCL2A mode, and works for PL when in MCL2AV mode. So I guees the replacement of TR100 and TR101 was the culprit, and the loose connction just confused me

[Madskp]

And then a package with this content arrived:

Stay tuned…..

 

[Madskp]

A little more info on my purchase.

The BL3500 is an MK1 with the MCL connector and SW 1.2.

The black box is another 1611 converter

I already tested the BL3500 with a minijack to MCL connector special cable, and its working fine so probably ready to go into the testing setup.

I dont think I realised before how the function with the Menu 0 4 GO is so easily aborted with any button press, so I really understand how its not an optimal way to use it.

[Guy]

Excellent purchase – and a long ML cable as well which will help with two-room setups. Looking forward to seeing some test results!

[Madskp]

Madskp wrote:
Thanks for testing this. So the fifth audio input for the BL3500 is not an option. Might also have been overkill

Madskp wrote:

I already tested the BL3500 with a minijack to MCL connector special cable, and its working fine so probably ready to go into the testing setup.

Got a crazy idea. If the MCL input on the BL3500 can be used with line level signals the MCL input of the MCL2AV’s could probably also do that?

Quick testing with some cable with phone plugs, and connected my iPhone for sound input

And there you go. an extra input that can be chosen by any audio command that is not used for a datalink unit connected to the DIN inputs.

The other inputs can still be used with shift+radio+6/7 or the respective audio command if it’s a datalink unit.

Im not sure if the sound is a little lower, but didn’t have time to make a head to head comparison with the same source on other inputs right now.

will followup on this at a later point

 

[Madskp]

Guy wrote:

Excellent purchase – and a long ML cable as well which will help with two-room setups. Looking forward to seeing some test results!

yes the long ML cable was an added bonus as well as a bunch of PL cables and the 2 BEO4’s.

I wont have time for testing the comming weekend, so it might take a little while before the results are rolling in

[Guy]

Madskp wrote:

And there you go. an extra input that can be chosen by any audio command that is not used for a datalink unit connected to the DIN inputs.

That’s useful! So as a ‘stand-alone’ the MCL2AV can have 4 selectable inputs if you include the AUX/TV socket (using ‘AV TV’). And the MCL input is a one-button-press selection.

Does your test above have the AUX/TV socket connected to BL1611 etc, or is that to follow?

[Madskp]

Guy wrote:

Madskp wrote:

And there you go. an extra input that can be chosen by any audio command that is not used for a datalink unit connected to the DIN inputs.

That’s useful! So as a ‘stand-alone’ the MCL2AV can have 4 selectable inputs if you include the AUX/TV socket (using ‘AV TV’). And the MCL input is a one-button-press selection. Does your test above have the AUX/TV socket connected to BL1611 etc, or is that to follow?

this was tested with the entire chain, MCL2AV – 1611 – BC6. Of course Ill also have to test it with my new BL3500 when I have a little more time for testing.

As I see it the total number of inputs for a BL3500 could be five with this setup:

– 1 MCL input on MCL on MCL2AV selectable with any audio command not used for other inputs

– 2 DIN inputs on MCL2AV selectable with shift+radio+6/7 or a.tape/CD if its data link products.

– 1 Din splitter input on the 1611 selectable with any video command

– 1 MCL/PL input on the BL3500 selectable with (menu) + menu + 0 + 4 +GO

 

[Author]

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