Yes, that's the one.
And yes, it's soldered to the piggyback-board, which again is soldered to the preamplifier board.
I can supply the correct relay. Email or PM me.

Martin

Dillen beat me to it, but yes, that is a classic symptom of a failing mute relay. Anyway, before taking more drastic measures, try to operate the muting function dozens of times. Sometimes it cures the problem if it has been caused by lack of use - I had that, but now almost seven years later, the original relay is still there and working fine. If it doesn't help, you'll need to replace the relay as cleaning it never works for long.

Also, welcome and thanks for joining as a silver member 🙂

Thanks!

Yes, I tried to click the relay several times, but it didn't fix the problem. Also, when I changed the speakers to port 2, the volume level was noticeable louder than in speaker port 1. So I assumed that the relay is corroded, I think the device has been sitting a long time before I bought it. And if I didn't change the relay, I would always pay too much attention to volume levels between channels that it would eventually ruin my listening experience. 😁

Thanks to Martin for supplying me the correct relay! Long weekend now so I started to get familiar with the Beomaster.

I began with changing the operating voltage to 240V. After that, soldering the PCB7 off and the old relay. Relay contacts seemed very dirty, so no wonder the sound wasn't good anymore. Then, I soldered the new relay on its place, and the six pins of the PCB7.

Then, moment of truth, I plugged in the device. The stand-by light lits but no relay clicking! Gently tapping the power amplifier relay, I found out that it had some cold soldering. I soldered the power amplifier relay with a fresh tin and now that relay clicks!

However, the newly installed speaker 1 relay doesn't make any click :/ This seems to be a NC type relay, so the speakers in port 1 are working but the mute function does not as the relay doesn't pull. I haven't test yet how it acts when connecting headphones. Also, now when starting the system from stand-by state, the loudspeakers make a quiet pop sound. So the speaker relay should be pulled when in mute and in stand-by state?

There is some improvements that happened despite this new fault. With new relay, the sound is much louder, that I had to set the start-up volume level setting much lower! Also now the sound comes out evenly from both loudspeakers. Changing of the operating voltage setting made the device a lot cooler. Now it had been in stand-by state around three hours, and the cooling fins feel almost cold, only the right (transformer) side is a little warm. Before the whole fin was hot, maybe 40-50C in stand-by! I recommend every owner of these amplifiers to do this change!

Now I have to find out what made the speaker relay dead. Is the connecting point CP3 the easiest way to measure 8V? Have to check first if the relay is getting operational voltage. Measuring is only little difficult as this relay board PCB7 is on top of another board.

Ok, today I did some tests and measurements.

The relay is functioning OK, when I connect headphones the relay clicks. I did some measurements and I think the fault must be in the transistor TR2. It should ground the relay pin 2, same way like the headphone socket does when you plug the phones in. But it does not, the BE-voltage to the transistor is 0,67V when mute should be on. I don't know if this is OK.. Maybe I change the transistor and see if that helps. 🙂

The Beomaster has worked now like a charm for one year after I fixed the issue with the relay board. The fault was in the board itself, there was a broken contact which was only visible with magnifying glass. Jump wire fixed that OK.

I have been noticed recently that the MCP 6500 does not start Beomaster from the living room table where I keep the remote. I have to take it with me and walk one meter away from the system to turn it on. After that, all the functions work far away from the system.

Now I tried one thing: I plugged off the system from mains for 5 minutes. After I plugged it in again, the MCP works very well! Even from the another room next to the living room if the door is open! But, when I cover the MCP completely and operate it to get "No contact" on the screen, it stopped working and works now again as badly as before! I have to take the mains plug off again to get MCP working.

Is there some kind of learning function or "pairing" between the Beomaster and MCP? And operating the MCP without good contact to the Beomaster "resets" the pairing? This is quite strange.

 

Hi Villeke, I'm from Finland as well (Lahti). I bought a Beomaster 5500 from flee market and don't know anything about it. The unit itself does not producing any sound-except when maxing out the volume...then you can hear sound. 

After going through the Beovorld forum I think this is Mute relay problem. I can see the white corrosion inside the clear plastic hub. 

I found replacement part form Digi-key net store but the problem is that I read that the relay in this Beomaster must have 6 pins. Is this correct or does it have to have 8 pins?

 

Best regards

 

E.

Egomon wrote:

Hi Villeke, I'm from Finland as well (Lahti). I bought a Beomaster 5500 from flee market and don't know anything about it. The unit itself does not producing any sound-except when maxing out the volume...then you can hear sound. 

After going through the Beovorld forum I think this is Mute relay problem. I can see the white corrosion inside the clear plastic hub. 

I found replacement part form Digi-key net store but the problem is that I read that the relay in this Beomaster must have 6 pins. Is this correct or does it have to have 8 pins?

 

Best regards

 

E.

The relay in the BM has 6 legs, so just cut off the 2 ekstra pins in your new relay(make sure it is the right ones you cut).. Most of the relays bought today, can be used for 2 purposes. One where the contact is made when relay-power is off, and one where contact is made when relay-power is on.

But... Your problem could also be that the linie-in/line-out jumpers on the connection panel is missing. If this is not there, then there will be very very low sound when all turned up.

Is the sound loud when turning the volume up, or very low ?

 

See here... 

/forum/general-discussion-and-questions/beosystem-5000

http://img.auctiva.com/imgdata/1/4/7/0/9/5/4/webimg/491459869_tp.jpg

/Weebyx

 

 

Moro

I have bought relays from Partco, they are ok. From Elfa yuo can get Panasonic relays round 4€. They usually have 8 pins, but only 6 of them is needed, just cut unused away or bend them under.

http://www.partco.biz/verkkokauppa/product_info.php?cPath=2065_1052_1733&products_id=7487

Hi and thank you for all the help...I did not expect so fast responses. 

 

To: Weebyx- Yes sound is very low when the volume is at the max...I will have a look at it today, and will take some pictures...i'm not a tech guy myself so don't exactly know what to look for...

 

To:Orava Moro :) thanks for the link!!!