Well, it didn't work with the BM5500, which might have something to do with that particular Beomaster not working with MCL in general. I connected the wires to a Speakerlink connector on my BS6500, and the display lit up Funny that the user manual doesn't give a clear answer on the on/off behaviour of the display. I guess it would light up even

Thanks a lot Graham, seems like it is normal behaviour then. I actually just brought one of the amp modules home, and I'll try to rig up a Speakerlink connection to a BM5500 with loose single wires if it won't make me rip my hair out. That should tell if the display comes on at all...

Well, that is basically what I wanted to know! At least this pair of 5000's doesn't seem to do that...

I checked the service manual, and the internal "on" signal for the entire amp comes through the CPU, so it must be working or the speakers wouldn't even turn on. Furthermore, there's only one common control for the backlight and the standby LED, so when one is off, the other is lit and vice versa. So I guess the end result is that

Hmm... I don't think it did, but I'm not sure anymore. Need to check that if/when I have the energy to rig them up again. The amps worked fine anyway, I was just wondering if there's any way to see if the "brains" work without speakerlink/powerlink connections. I don't have any suitable cables and wouldn't like to purchase

I searched through the forums, but couldn't find a clear answer... Am I correct in assuming that the Beolab 3000/5000 displays will not even light the backlight when connecting through the line input? Seems silly if they would, considering there's nothing to display, but then again there's no other indication of the speakers being on either

To me, the only RF critical part seems the front end IC (TDA 1062). The IF part runs at about 10 MHz and the stereo decoder at audio frequencies, so they should have no problem sitting in sockets. Same for the various op-amps. I don't think sockets are necessary though if you check the supply voltages, and other semiconductors for shorts before

Great work on the volume control ICs - we need more stuff like this to convince people to not simply junk the kit that needs "unobtainable" spare parts! Considering the extent of the damage to the unit, I think it might have been caused by a lightning. Unfortunately that kind of damage defies most regular fault finding, you could be looking

[quote user="Medogsfat"] [quote user="Stonk"] I would love to see the infamous part - even if it's broken in two pieces. [/quote] Me too! when it comes to bodging rectifying & or reproducing otherwise obsolete parts it is the sort of thing myself & Stonk relish Chris. [/quote] Me too Don't actually have the tools

[quote user="evman140"] I always thought that a pre-out carried a simple line out signal...? So if the pre-outs do not carry the volume control, what does that? And to try and further understand - what is the difference between pre-outs and volume controlled outputs? [/quote] I'll explain in another way There is no volume control whatsoever