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This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hi all,
I've recently got hold of a Beosystem 5500 (amazing!) and a 5000 as a spare. The problem is that the amp for the 5500 doesn't seem to output any sound at all. I've tested the other kit (i.e. Turntable, CD etc.) through the amp for the 5000 at it all works fine, so I know the problem is with the amp. I have RCA leads connecting the line ins to the outs, so I know it isn't that; I can change the volume using the Beolink 1000, and so it isn't that. There is no sound through headphones or through the RCA outputs.
There IS a relay click when you switch it on, and a click when you mute/unmute. But no sound, whether you select the CD, phono, tape or even the tuner as an input.
Does anyone have any suggestions, or is it most likely that something has blown within the amp?
I do have one other question. I have a MCP 5500, which I am assured is working; however it has 'no contact' with the 5500. I've tried the key combo on the 1000 (store-1-something, can't remember off the top of my head) to reset the link, but it just won't play ball.
So, no sound and can only communicate with the beolink and not the MCP. Two seperate issues I am sure, but any help/advice would be most appreciated. I have searched the forums, but can't find any solutions I haven't tried as above!
Anyone's help would be most appreciated!
All the best,
Joe
Oh - my apologies for being rude - newbie here saying Hi to everyone on the forum!
There should be two metal links between the line in and out sockets.These sockets were for an external equaliser,and if the links are missing,you will get exactly the problem you have.If the links are missing,simply join the sockets with a standard stereo rca cable.
Nick
Hi Nick,
many thanks for this. I have however already connected these with standard RCA cables, and still no sound. I did also try connecting the 'out' ones of these to my amp to see if there was any sound - and there was, but it was just noise, like a detuned radio (but this wasn't on just radio, this was on phono & CD as well).
Any other thoughts would be gratefully received though - thank you for your suggestion of course.
Hi and welcome to BeoWorld.
I'm not that technical so I don't know if it helps but have you tried the headphone socket to see if you get anything through that?
Opman
Hi Opman,
thanks for the suggestion - yes, I have tried the headphone socket. If you're on tuner and you change radio stations you can just hear a 'pop' as it changes, but that's it - still no sound.
As before, any further suggestions MUCH appreciated!
The preamp drives the headphones, the power amp is independent working, could even be missing totally, but the headphones must work.
In this case the preamp is gone...
Usually there are cracks around the rca jacks, sometimes the board is really broken in this area.
The MCP uses 2-way communication. If there is a fault, it will show "no contact". But it will always send data to the master. If the master works with a BL1000 and does not react to the MCP, then the MCP does not send data. I have seen several MCP's with defect ir transmitters... lots of dust and dirt inside.
Cracked solder joints around the RCA sockets, yes.And also where the vertical socket board is soldered to the preamp main board.But I don't agree that the headphones are driven by the preamp;The headphones output is fed from the power output stage, just like the speakers, butthrough a voltage dividing resistor network.The Preamp output is fed the same way to get a volume controlled "line level" outputfor use with an external amplifier.
But it could still be a bad preamp or missing voltage(s) from the power supply.The source selector circuit could also be at fault - and with it the processor.You will have to put a scope to the signal path and see where the signal is lost.
Martin
Further to Martins advice,I'm afraid you will need to "get technical".There may be indeed be a crack somewhere in the pcb,but from your discription of the "white noise" you hear via the line out connections,it seems there may be a failure in or around the main sound control chip.
You could remove the bottom plate of the Beomaster,and have a look around the pre-amp/control board,to see if there is any obvious damage to the printed circuit,but otherwise,you will need to trace the missing signal with instruments.
Might be easier to entrust it to an experienced B&O techie?
Regards,