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I have recently bought a beomaster 6500. It seemed alright but after an hour or so I can hear a relay click, it switches of and on again resets the volume to default and resumes playing.
Once I bought a faulty 5500 that did odd things like that, and that turned out to be a faulty rectifier bridge. But it did need most of the cap work as above as well, and the no-load trimmers replaced.
I followed your upgrade of the 6500 with great interest. I have run into what I believe is a heat problem with my old 5500, and will first of all try your 220 to 240 V conversion and see if this helps.
However I hope you can help me answer another question. When is the cooling fan supposed to run?
Allways, or only at certain temperatures??
kind regards, Erik
Who is your audio grade electrolytic supplier?
However I hope you can help me answer another question. When is the cooling fan supposed to run?
Allways, or only at certain temperatures??
Certain temps, I think. The Beomaster 7000 starts the fan at 50 deg and reaches full speed at 95. I think the BM5500 is similar, but I'm not 100 %.
/ Johan
Certain temps, I think. The Beomaster 7000 starts the fan at 50 deg and reaches full speed at 95. I think the BM5500 is similar, but I'm not 100 %.
Yes, it is temperature controlled. However, I have never managed to see/hear one running! I guess it needs a long time of playing at large volumes. If the amp heats due to incorrect no-load current setting (bad trimpots), it is far more likely to shut down via other protection circuits before the fan starts.
@Erik, your problem is more likely to be the bad trimmers. It happens to all of them. The voltage conversion should help a bit though, but you should check the trimmers and their setting as well while you're in there.
i have replaced and adjusted the no-load current trimmers with succes. The beomaster plays but after approx. 20 mins I can hear the muting-relay ? click the machine no longer switches of but the relay once in a while clicks. Can I replace the relay, if so what type of relay should I order ?
Well done so far! The remaining problem isn't going to be in the relay. They don't do anything by themselves. You probably have some bad solder or connector somewhere. The difficult thing is that it could be almost anywhere 😛 I think I would start by carefully tapping around with something non-conductive to see if you find a place that doesn't like to be touched.
Thanks Mika,
I did the cap replacement with this article and /forum/general-discussion-and-questions/beovision-6-or-beocenter-6
My Beomaster 6500 was sounding horrible lately. Now it is al good again.
€25 in parts was a very good investment.🤒
Well done teus 🤒
It's very rewarding when you can actually hear a difference with relatively little work & investement. That isn't nearly always the case with component upgrades.
Hello all from Finland! I just got my first B&O device, a beautiful Beosystem 6500. I have noticed only one minor fault in the system. The right output of speaker 1 in the Beomaster 6500 is a little bit quieter when the system starts, and after raising the volume level the speaker function comes back to the normal. I have read a dozen posts here from the forum that it is the muting relay that gives the touble. Am I right, is the relay on the smaller PCB board in the picture above? Is it soldered in place? Could someone give me a link or similar to some component website or give the exact type of the relay that will fit? I could then get the right part ready when I start to disassemble the device. I am also planning to check the transformer and change the voltage to 240V if it's not already set. Thanks for the help!
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