[Madskp]

Madskp wrote:

Now it’s going to be exciting to see if it will also work with the BLC 1615 as that combination could make a ML link room with local datalink inputs

Time to do some testing with some of the new equipment.

BLC1615 (SW 1.5) AAL connected to MCL screw terminal on MCL2AV:

BLC1615 pin 2 – > MCL2AV Brown GND R, Grey GND L, Shield GND

BLC1615 pin 1 – > MCl2AV Yellow L

BLC1615 pin 4 – > MCL2AV Green R

BLC 1615 pin 6 – > MCL2AV White Data

As audiomaster I used BLC1611. MCL2AV in option 1.5

I works. I get sound from ML through BLC1615 to the MCL2AV. It only reacts to audio commands. also tried to change to option 2.5 with no change.

Edit 2023.06.05 Tried the same test with BLC 1615 Sw 1.0 and 1.1, and this also works

Also tried it with a BLC1614 (SW 1.0) while I had it all lined up, and it worked the same as the 1615.

[Madskp]

matador wrote:

Guy wrote:

could be so useful for something …

I once heard that 1, is Masterlink mode, 2 is Nespresso mode and 3 is Dyson mode, but I’m not really sure, the guy and me were really drunk at the time.

I think 2 and 3 requires even more black boxes ?

[Madskp]

Guy wrote:

I hadn’t seen 1610s before, hence had to find additional info here: https://archivedforum.beoworld.org/forums/t/39163.aspx I don’t think I need one …

I’m not really sure if they are useable without an AV9000, but I will of course try to test a few things with them

[Madskp]

Guy wrote:

matador wrote:

Oh goddamnit, you caught the Warwickshire flu! ;-D

Even I haven’t got it that bad! ??

not even with BEO4 remotes? ?

[Madskp]

matador wrote:

What is… This?

just a ML junction box attached with double sided tape. One of the more simple black boxes ?

[Madskp]

matador wrote:

Oh goddamnit, you caught the Warwickshire flu! ;-D

or just the Beo(blackbox)virus ?

[Madskp]

This might be getting out of hand…

from left to right 1614, 1615 and 1610 some of them without official labels, and some in different software revisions.

I might sell some of them to get a more manageable collection of black boxes

 

 

[Madskp]

Sorry to hear that these remotes are so fragile. Have never had in my hands, so have no experience with them at all.

On thought, could it make sense to cut of a battery wire and connect it to AA og AAA batteries just to see if it lights up?

If it does and it can run off the for an acceptable amount of time could it make sense to convert it to none chargeable and just change batteries when dead?

 

[Madskp]

While I had it open i did some probing with a multimeter to find out what the pins on the 8 Pin DIN connector goes to.

The PCB for the plugs are clearly redesigned compared to the MK1. For example PIN 2 is in use on this PCB. I have shown where the pins end up on the PCB in the picture below.

Pin 1 – As far as I can tell it has no connection to anything

Pin 2 – Ground for audio. Called GND REF on the block diagrams in the servicemanual

Pin 3 – Audio left – Called PL in L on the block diagrams in the servicemanual

Pin 4 – Not really sure. I measure 100 Ohms resistance between the numbered soldering point and the pin 3 on the flat cable to the crossfield PCB. It is called SP ON on the block diagrams in the servicemanual. Unfortnuatly I can’t trace it further from the connecter on the crossfiled PCB which looks very much the same as in a MK1 BL3500

Pin 5 – Audio right – Called PL in R on the block diagrams in the servicemanual

Pin 6 – DATA – Called DATA on the block diagrams in the servicemanual

Pin 7 – Ground for data – Called GNDD on the block diagrams in the servicemanual

 

 

[Madskp]

Madskp wrote:

Madskp wrote: I will try with my other BLC 1611 later. Just did a test with the other converter with the same result. Both converters are known to be working from all my other testing, so this point at the fault being in the BL3500. Also The problems with IR commands is also present with only power conencted

Did a little disassembly to investegate on pinouts. Removed display module, cross field PCB and Micro computer.

After putting it back together I can now set options again, but no way I can choose a source.

Pressing Menu, menu, 0, 2, GO now I sometimes get an error 1, 2 or 4 with both of my BLC 1611.

hmmmm what to do

 

 

 

[Madskp]

Madskp wrote:

I will try with my other BLC 1611 later.

Just did a test with the other converter with the same result. Both converters are known to be working from all my other testing, so this point at the fault being in the BL3500. Also The problems with IR commands is also present with only power conencted

[Madskp]

OK so the BL3500 does’t respond to other IR commands than service commands.

I could change option settings at first, but now it will not respond to them either.

It plays fine from PL by using Menu, Menu, 0, 4, GO.

Trying the service commands Menu, 0, 2, Go when connected to BLC 1611 gives me an error 4 which is Masterlink collision.

I will try with my other BLC 1611 later.

[Madskp]

Guy wrote:

You said earlier that your BL3500 was SW1.2, so either you have upgraded it or got hold of another! I am looking forward to seeing further experiments and hopefully results!

Yes thats correct. But I was tempted to buy this one, and hopefully it will make us a little bit wiser.

First thing I’m planning to do is to open it up and cross check the pinout of the PL connecter, especially in regards to that internal connection called SP ON that is not on the MCL version.

To be continued…

[Madskp]

A little teaser post

[Madskp]

Is the P5 button located on another PCB like it is in a BM3000?

in that case I had similar trouble with a BM3000 where the problem was the soldered ribbon cable connections where they meet the PCB where there was one bad solder point, and one case where one of the wires going through the PCB was bent a little and short circiuted to one of the other pins

[Madskp]

Dillen wrote:

Beovision LX2800 has a RS-232 serial interface for a printer in the form of a DIN socket at the rear of the cabinet. See page 18 (and 42) here: https://bnoservice.nl/handleidingen/beovision-lx-2800.pdf Martin

Wauw didn’t even think that something like that would have been built in. Guess many did not use this feature, but I must say that the manual is thorough regarding the setup including PIN outs and all.

[Madskp]

Madskp wrote:

Guy wrote:

Madskp wrote:

Setting the IR eye to option 1, and covering the BM5500’s IR eye full control is possible.

That’s very interesting. It maybe worth trying the MCL sensor connected directly to pin 6 of your Beocord 3500, or even a turntable!

yes that might be interesting to see if that works. Might also try the AAL connector on the BLC 1611 and see if an audio or video master on ML can be activated

Tried testing today with the IR eye connected to BC3500, BG2000 and BCL 1611 with the datalink pin moved to pin 7 for the BC3500.

The result for all 3 test’s are no response at all. Tried different option settings, all audio and video commands + play, stop, fw, rw. But to avail.

It makes sense that it worked for the BM5500 as the data wire would be connected to the same spot in a setup with a MCL2A. A possible use case for this setup could be as an extra IR eye in large or L shaped rooms.

[Madskp]

This may be drifting a little away from the passive, but still relevant for the use of the IR eyes.

As observed in another thread the datalink conenctions are shared between the AUX and speakerlink connectors at least in a BM5500.

On the The MCL2A IR data from the IR eye is connected directly to the datalink connection

 

This made me think, can the IR eye be used connected directly to the datalink pin 6 on the BM5500 AUX connector. So I made a little 7 pin DIN connector with data and ground from the MCL IR eye connected to pin 6 and 2 and a wire to a set of headphones connected to pin 1, 4 and 2. 5V power from a bench supply connected ground and +5V wires of the IR eye.

Setting the IR eye to option 1, and covering the BM5500’s IR eye full control is possible.

 

[Madskp]

quattttro wrote:

I am not really sure about the cost effectiveness of such repairs: The Beo4 was about £20 incl P&P, a new screen about £25 and a new battery cover £4.

Wouldn’t it be possible to transfer the display from a BEO4 with another defect, or are the different versions of the display?

I have a Beo4 with navi button that are use daily for my V1, and the display is missing a line, and the black paint on the case is scratched in several places, so I was thinking of using an a older (but in nicer condition) BEO4 as a donor for freshing it up.

[Madskp]

Guy wrote:

As you can see they clean up quite well as long as you are careful not to damage the rubber keyboards.

Nice result 🙂

Guy wrote:

The Video Terminal is interesting. Initially I tried to test the AUX and TAPE button with my BeoSound 1, but then realised that it will only control video equipment, hence AUX is actually V.AUX (or DTV2) and TAPE is V.TAPE (or V.MEM). I also discovered from an old thread that PRINT sends the PC command.

We got one of these video terminals at home when I was a kid, and I remember wondering what the Print button was for. Now I may even wonder more that it it equal to the PC command. What equipement was it for?

Also a funy little detail with the telephone symbol over the MUTE button as a kind of extra explanation of the function 🙂

 

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